April 24, 2025

Lunar Ambitions: China’s Nuclear Plans, Exoplanet Breakthroughs, and Hubble’s 35-Year Legacy

Lunar Ambitions: China’s Nuclear Plans, Exoplanet Breakthroughs, and Hubble’s 35-Year Legacy
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Lunar Ambitions: China’s Nuclear Plans, Exoplanet Breakthroughs, and Hubble’s 35-Year Legacy

In this episode of Astronomy Daily, join host Anna as she guides you through a captivating exploration of our universe's latest advancements and celestial events. From ambitious lunar projects to groundbreaking detection technologies, this episode promises to ignite your curiosity about the cosmos.

Highlights:

- China's Lunar Nuclear Power Plant: Discover China's bold plans to establish a nuclear power plant on the Moon in collaboration with Russia. This initiative aims to support the International Lunar Research Station and pave the way for a permanent human presence on our lunar neighbor, addressing the challenges of long-term operations in space.

- Revolutionary Exoplanet Detection Technology: Learn about a groundbreaking coronagraph developed by researchers at the University of Arizona that could transform our ability to detect exoplanets by dimming the overpowering light from their parent stars. This innovation may help us locate Earth-like planets in habitable zones and search for signs of life beyond our solar system.

- Mini Planet Parade on April 24: Mark your calendars for a stunning celestial event! A mini planet parade featuring Mercury, Venus, Saturn, Neptune, and our Moon will grace the pre-dawn sky on April 24. Get tips on how to spot this rare alignment and capture breathtaking photographs of the cosmic display.

- Asteroid Vesta's Opposition: Get ready for a special viewing opportunity as asteroid Vesta reaches opposition on May 2, becoming visible even to the naked eye. Learn about Vesta's unique characteristics and its significance in our solar system's history.

- Celebrating Hubble's 35th Anniversary: Join us in commemorating the Hubble Space Telescope's 35 years in orbit. We'll reflect on its remarkable contributions to astronomy, including groundbreaking discoveries and stunning images that have shaped our understanding of the universe.

For more cosmic updates, visit our website at astronomydaily.io (http://www.astronomydaily.io/) . Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTubeMusic, TikTok, and our new Instagram account! Don’t forget to subscribe to the podcast on Apple Podcasts, Spotify, iHeartRadio, or wherever you get your podcasts.

Thank you for tuning in. This is Anna signing off. Until next time, keep looking up and stay curious about the wonders of our universe.

00:00 - Welcome to Astronomy Daily

01:05 - China's lunar nuclear power plant

10:30 - Revolutionary exoplanet detection technology

17:00 - Mini planet parade on April 24

22:15 - Asteroid Vesta's opposition

27:30 - Celebrating Hubble's 35th anniversary

✍️ Episode References

China's Lunar Plans

[China National Space Administration]( http://www.cnsa.gov.cn/ (http://www.cnsa.gov.cn/) )

Exoplanet Detection Technology

[University of Arizona]( https://www.arizona.edu/ (https://www.arizona.edu/) )

Mini Planet Parade Details

[Astronomy Magazine]( https://www.astronomy.com/ (https://www.astronomy.com/) )

Asteroid Vesta Information

[NASA Dawn Mission]( https://www.nasa.gov/mission_pages/dawn/main/index.html (https://www.nasa.gov/mission_pages/dawn/main/index.html) )

Hubble Space Telescope Milestones

[NASA Hubble]( https://www.nasa.gov/hubble (https://www.nasa.gov/hubble) )

Astronomy Daily

[Astronomy Daily]( http://www.astronomydaily.io/ (http://www.astronomydaily.io/) )


Become a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-exciting-space-discoveries-and-news--5648921/support (https://www.spreaker.com/podcast/astronomy-daily-exciting-space-discoveries-and-news--5648921/support?utm_source=rss&utm_medium=rss&utm_campaign=rss) .

Episode link: https://play.headliner.app/episode/26772570?utm_source=youtube

00:00 - Welcome to Astronomy Daily

01:05 - China’s lunar nuclear power plant

10:30 - Revolutionary exoplanet detection technology

17:00 - Mini planet parade on April 24

WEBVTT
Kind: captions
Language: en

00:00:00.320 --> 00:00:02.310
Welcome to Astronomy Daily. I'm your


00:00:02.320 --> 00:00:04.870
host, Anna. Thanks for joining me today


00:00:04.880 --> 00:00:06.710
as we explore the fascinating world


00:00:06.720 --> 00:00:09.350
beyond our atmosphere. Today's cosmic


00:00:09.360 --> 00:00:11.110
journey takes us from the moon to the


00:00:11.120 --> 00:00:13.509
far reaches of space as we dive into


00:00:13.519 --> 00:00:15.350
some truly remarkable developments in


00:00:15.360 --> 00:00:17.910
astronomy and space exploration. We'll


00:00:17.920 --> 00:00:19.429
be starting close to home with China's


00:00:19.439 --> 00:00:21.349
ambitious plans to construct a nuclear


00:00:21.359 --> 00:00:23.189
power plant on the lunar surface in


00:00:23.199 --> 00:00:25.509
collaboration with Russia, a bold step


00:00:25.519 --> 00:00:27.349
toward establishing a permanent human


00:00:27.359 --> 00:00:29.509
presence on our celestial neighbor. Then


00:00:29.519 --> 00:00:31.109
we'll examine a groundbreaking new


00:00:31.119 --> 00:00:33.190
technology from researchers at the


00:00:33.200 --> 00:00:35.110
University of Arizona that could


00:00:35.120 --> 00:00:37.389
revolutionize our ability to detect


00:00:37.399 --> 00:00:39.830
exoplanets by effectively dimming the


00:00:39.840 --> 00:00:41.430
overwhelming light of their parent


00:00:41.440 --> 00:00:43.830
stars. This coronagraph breakthrough


00:00:43.840 --> 00:00:45.590
might just help us find Earthlike


00:00:45.600 --> 00:00:47.510
planets in habitable zones and


00:00:47.520 --> 00:00:50.229
potentially signs of life. If you're an


00:00:50.239 --> 00:00:52.229
early riser, you're in for a treat this


00:00:52.239 --> 00:00:54.310
week. We'll tell you about a mini planet


00:00:54.320 --> 00:00:56.869
parade happening on April 24th when


00:00:56.879 --> 00:01:00.310
Mercury, Venus, Saturn, Neptune, and our


00:01:00.320 --> 00:01:01.910
moon will cluster together in the


00:01:01.920 --> 00:01:04.549
pre-dawn sky, creating a spectacular


00:01:04.559 --> 00:01:07.109
viewing opportunity for amateur


00:01:07.119 --> 00:01:08.950
astronomers and stargazers. We have


00:01:08.960 --> 00:01:10.950
exciting news about asteroid Vesta,


00:01:10.960 --> 00:01:13.109
which reaches opposition on May 2nd.


00:01:13.119 --> 00:01:15.590
hand. This ancient protolanet will be


00:01:15.600 --> 00:01:17.429
visible even to the naked eye under the


00:01:17.439 --> 00:01:19.670
right conditions with a special viewing


00:01:19.680 --> 00:01:21.350
opportunity coming up when it forms a


00:01:21.360 --> 00:01:23.270
temporary double star with another


00:01:23.280 --> 00:01:25.510
celestial object. Finally, we'll


00:01:25.520 --> 00:01:27.030
celebrate a major milestone as the


00:01:27.040 --> 00:01:29.590
Hubble Space Telescope marks its 35th


00:01:29.600 --> 00:01:31.990
year in orbit. We'll look back at how


00:01:32.000 --> 00:01:33.429
this remarkable instrument has


00:01:33.439 --> 00:01:34.950
transformed our understanding of the


00:01:34.960 --> 00:01:36.390
universe and continues to make


00:01:36.400 --> 00:01:38.149
groundbreaking discoveries after more


00:01:38.159 --> 00:01:41.190
than three decades. So settle in as we


00:01:41.200 --> 00:01:43.190
journey through these cosmic wonders and


00:01:43.200 --> 00:01:44.870
explore the latest developments in our


00:01:44.880 --> 00:01:47.230
ongoing quest to understand the


00:01:47.240 --> 00:01:49.670
universe. In what can only be described


00:01:49.680 --> 00:01:51.429
as one of the most ambitious lunar


00:01:51.439 --> 00:01:54.230
projects since the Apollo era, China has


00:01:54.240 --> 00:01:56.230
revealed plans to develop a nuclear


00:01:56.240 --> 00:01:58.389
power plant on the moon. This


00:01:58.399 --> 00:02:00.230
extraordinary undertaking would support


00:02:00.240 --> 00:02:01.990
the International Lunar Research


00:02:02.000 --> 00:02:04.310
Station, a collaborative effort between


00:02:04.320 --> 00:02:07.190
China and Russia aimed at establishing a


00:02:07.200 --> 00:02:09.669
sustained human presence on our nearest


00:02:09.679 --> 00:02:12.070
celestial neighbor. The announcement


00:02:12.080 --> 00:02:14.070
came during a presentation by a senior


00:02:14.080 --> 00:02:16.869
Chinese space official just last week,


00:02:16.879 --> 00:02:18.790
highlighting the serious intentions


00:02:18.800 --> 00:02:20.710
behind what might otherwise sound like


00:02:20.720 --> 00:02:23.510
science fiction. This nuclear facility


00:02:23.520 --> 00:02:25.350
would provide the consistent power


00:02:25.360 --> 00:02:27.910
needed for long-term lunar operations,


00:02:27.920 --> 00:02:29.510
addressing one of the fundamental


00:02:29.520 --> 00:02:31.270
challenges of maintaining a permanent


00:02:31.280 --> 00:02:34.470
outpost so far from Earth. The timeline


00:02:34.480 --> 00:02:36.229
for this lunar endeavor centers around


00:02:36.239 --> 00:02:39.990
the Changi 8 mission scheduled for 2028.


00:02:40.000 --> 00:02:41.350
This mission will serve as the


00:02:41.360 --> 00:02:43.030
foundation for what China hopes will


00:02:43.040 --> 00:02:45.990
become a permanent manned lunar base by


00:02:46.000 --> 00:02:49.589
2035. The preliminary plans also include


00:02:49.599 --> 00:02:52.150
implementing large-scale solar arrays


00:02:52.160 --> 00:02:53.990
alongside an intricate network of


00:02:54.000 --> 00:02:56.229
pipelines and cables built across the


00:02:56.239 --> 00:02:58.150
lunar surface to distribute heat and


00:02:58.160 --> 00:03:00.470
electricity to the various components of


00:03:00.480 --> 00:03:03.030
the research station. What makes this


00:03:03.040 --> 00:03:05.030
particularly interesting is how China's


00:03:05.040 --> 00:03:07.670
lunar ambitions mirror the timeline of


00:03:07.680 --> 00:03:10.710
NASA's own Aremis program, which aims to


00:03:10.720 --> 00:03:12.710
return American astronauts to the moon


00:03:12.720 --> 00:03:14.949
by 2027.


00:03:14.959 --> 00:03:17.110
We appear to be entering a new era of


00:03:17.120 --> 00:03:19.110
lunar exploration and possibly


00:03:19.120 --> 00:03:21.270
settlement, reminiscent of the space


00:03:21.280 --> 00:03:23.910
race of the 1960s, but with more


00:03:23.920 --> 00:03:25.910
emphasis on establishing long-term


00:03:25.920 --> 00:03:27.910
infrastructure rather than simply


00:03:27.920 --> 00:03:30.630
planting flags. The China Russia


00:03:30.640 --> 00:03:32.710
collaboration is especially notable


00:03:32.720 --> 00:03:34.309
given the current geopolitical


00:03:34.319 --> 00:03:37.190
landscape. Recent Western sanctions have


00:03:37.200 --> 00:03:39.670
significantly limited Russia's access to


00:03:39.680 --> 00:03:41.589
space technology, making this


00:03:41.599 --> 00:03:43.670
partnership strategically valuable for


00:03:43.680 --> 00:03:46.550
both nations. For Russia, it provides


00:03:46.560 --> 00:03:48.229
continued involvement in cuttingedge


00:03:48.239 --> 00:03:50.550
space exploration, while China gains


00:03:50.560 --> 00:03:52.710
access to Russia's decades of experience


00:03:52.720 --> 00:03:55.430
in space operations and technology.


00:03:55.440 --> 00:03:57.030
Building a nuclear power plant on the


00:03:57.040 --> 00:03:58.869
moon presents enormous engineering


00:03:58.879 --> 00:04:00.390
challenges.


00:04:00.400 --> 00:04:01.990
The facility would need to withstand


00:04:02.000 --> 00:04:04.149
extreme temperature variations,


00:04:04.159 --> 00:04:06.070
radiation exposure, and the


00:04:06.080 --> 00:04:08.550
complications of lunar dust, not to


00:04:08.560 --> 00:04:10.149
mention the logistical hurdles of


00:04:10.159 --> 00:04:11.910
transporting construction materials and


00:04:11.920 --> 00:04:15.589
equipment 238,000 m from Earth. Yet, the


00:04:15.599 --> 00:04:17.830
advantages are equally significant.


00:04:17.840 --> 00:04:19.990
Nuclear power offers the high energy


00:04:20.000 --> 00:04:22.069
density and reliability needed for a


00:04:22.079 --> 00:04:24.070
permanent lunar base without the


00:04:24.080 --> 00:04:25.830
limitations of solar power during the


00:04:25.840 --> 00:04:29.110
twoe lunar nights. If successful, this


00:04:29.120 --> 00:04:30.790
endeavor could fundamentally alter


00:04:30.800 --> 00:04:33.030
humanity's relationship with our nearest


00:04:33.040 --> 00:04:35.110
celestial neighbor, transforming the


00:04:35.120 --> 00:04:37.590
moon from a destination for brief visits


00:04:37.600 --> 00:04:39.670
to a place where people may one day live


00:04:39.680 --> 00:04:42.469
and work for extended periods. It also


00:04:42.479 --> 00:04:44.230
raises fascinating questions about


00:04:44.240 --> 00:04:47.270
international cooperation, competition,


00:04:47.280 --> 00:04:49.270
and the potential commercialization of


00:04:49.280 --> 00:04:52.790
lunar resources in the decades ahead.


00:04:52.800 --> 00:04:55.270
Next up today, imagine being able to see


00:04:55.280 --> 00:04:57.430
a planet a billion times dimmer than its


00:04:57.440 --> 00:05:00.870
star. It sounds impossible, right? Well,


00:05:00.880 --> 00:05:02.870
researchers at the University of Arizona


00:05:02.880 --> 00:05:05.189
have developed a breakthrough technology


00:05:05.199 --> 00:05:07.029
that might just make this seemingly


00:05:07.039 --> 00:05:09.430
impossible feat a reality. Their


00:05:09.440 --> 00:05:11.110
innovative coronagraph design could


00:05:11.120 --> 00:05:13.110
revolutionize how we detect exoplanets


00:05:13.120 --> 00:05:14.469
by effectively turning down the


00:05:14.479 --> 00:05:16.590
overwhelming brightness of their parent


00:05:16.600 --> 00:05:19.270
stars. Lead researcher Nico Dashler


00:05:19.280 --> 00:05:21.590
explained the fundamental challenge.


00:05:21.600 --> 00:05:24.310
Earthlike planets in the habitable zone


00:05:24.320 --> 00:05:26.390
can easily be up to a billion times


00:05:26.400 --> 00:05:28.510
dimmer than their host


00:05:28.520 --> 00:05:31.350
star. This extreme brightness difference


00:05:31.360 --> 00:05:33.670
has been a persistent obstacle in our


00:05:33.680 --> 00:05:35.590
quest to directly observe potentially


00:05:35.600 --> 00:05:38.390
habitable worlds. When a planet is so


00:05:38.400 --> 00:05:40.790
drastically outshined, it's like trying


00:05:40.800 --> 00:05:42.870
to spot a firefly next to a stadium


00:05:42.880 --> 00:05:45.590
flood light. The team's solution


00:05:45.600 --> 00:05:47.830
published in the journal Optica is


00:05:47.840 --> 00:05:50.629
remarkably elegant. Their coronagraph


00:05:50.639 --> 00:05:52.469
essentially siphons away the starlight


00:05:52.479 --> 00:05:54.310
that would normally overwhelm the faint


00:05:54.320 --> 00:05:57.110
light from nearby exoplanets. What makes


00:05:57.120 --> 00:05:59.189
this approach particularly exciting is


00:05:59.199 --> 00:06:01.029
that it can reach what scientists call


00:06:01.039 --> 00:06:03.189
quantum optical limits for exoplanet


00:06:03.199 --> 00:06:05.350
detection, pushing the boundaries of


00:06:05.360 --> 00:06:08.070
what we previously thought possible. In


00:06:08.080 --> 00:06:09.430
laboratory testing, the team


00:06:09.440 --> 00:06:11.189
demonstrated that their system could


00:06:11.199 --> 00:06:13.070
identify the positions of synthetic


00:06:13.080 --> 00:06:15.110
exoplanets much closer to their


00:06:15.120 --> 00:06:17.270
artificial host stars than standard


00:06:17.280 --> 00:06:19.909
resolution limits would normally allow.


00:06:19.919 --> 00:06:22.070
This capability is critical because the


00:06:22.080 --> 00:06:24.150
most interesting planets, those


00:06:24.160 --> 00:06:26.550
potentially capable of supporting life,


00:06:26.560 --> 00:06:28.469
tend to orbit in close proximity to


00:06:28.479 --> 00:06:30.790
their stars. The technology relies on


00:06:30.800 --> 00:06:32.629
what scientists call spatial mode


00:06:32.639 --> 00:06:34.950
sorting. Think of light from different


00:06:34.960 --> 00:06:37.029
sources in space as creating distinct


00:06:37.039 --> 00:06:39.070
patterns similar to different notes on a


00:06:39.080 --> 00:06:41.749
piano. The coronagraph uses a mode


00:06:41.759 --> 00:06:43.590
sorter to filter out the overwhelming


00:06:43.600 --> 00:06:45.670
starlight, followed by an inverse mode


00:06:45.680 --> 00:06:47.670
sorter to reconstruct the image,


00:06:47.680 --> 00:06:49.670
allowing the exoplanet's light to emerge


00:06:49.680 --> 00:06:52.469
with remarkable clarity. What separates


00:06:52.479 --> 00:06:53.909
this approach from other detection


00:06:53.919 --> 00:06:55.909
methods is that it captures direct


00:06:55.919 --> 00:06:58.309
images rather than inferring a planet's


00:06:58.319 --> 00:07:01.029
existence through indirect means. Our


00:07:01.039 --> 00:07:02.870
coronagraph directly captures an image


00:07:02.880 --> 00:07:05.749
of the exoplanet. Desler noted images


00:07:05.759 --> 00:07:07.670
can provide context and composition


00:07:07.680 --> 00:07:09.350
information that can be used to


00:07:09.360 --> 00:07:11.749
determine exoplanet orbits and identify


00:07:11.759 --> 00:07:13.950
other objects that scatter light from a


00:07:13.960 --> 00:07:16.950
star. To validate their concept, the


00:07:16.960 --> 00:07:18.710
researchers constructed a laboratory


00:07:18.720 --> 00:07:21.510
setup mimicking a star exoplanet system


00:07:21.520 --> 00:07:25.189
with a 1,00 to1 brightness contrast. By


00:07:25.199 --> 00:07:26.790
simulating the planet's orbit and


00:07:26.800 --> 00:07:28.950
capturing images frame by frame, they


00:07:28.960 --> 00:07:30.790
were able to pinpoint its position at


00:07:30.800 --> 00:07:32.469
separations previously considered


00:07:32.479 --> 00:07:35.110
impossible to resolve. The implications


00:07:35.120 --> 00:07:37.270
of this technology extend far beyond


00:07:37.280 --> 00:07:39.430
just finding planets. If this


00:07:39.440 --> 00:07:41.670
coronagraph can be refined and scaled up


00:07:41.680 --> 00:07:44.469
for astronomical observatories, it could


00:07:44.479 --> 00:07:46.550
potentially allow scientists to analyze


00:07:46.560 --> 00:07:49.189
the atmospheres of Earthlike exoplanets,


00:07:49.199 --> 00:07:51.830
for bio signatures, chemical indicators


00:07:51.840 --> 00:07:53.589
that might reveal the presence of life


00:07:53.599 --> 00:07:56.230
beyond our solar system. The timing


00:07:56.240 --> 00:07:57.749
couldn't be better as NASA has


00:07:57.759 --> 00:08:00.150
prioritized exoplanet discovery with its


00:08:00.160 --> 00:08:02.629
planned habitable worlds observatory.


00:08:02.639 --> 00:08:04.390
This next generation space telescope


00:08:04.400 --> 00:08:06.070
will specifically target potentially


00:08:06.080 --> 00:08:08.469
habitable exoplanets and technologies


00:08:08.479 --> 00:08:10.550
like this advanced coronagraph could be


00:08:10.560 --> 00:08:12.869
instrumental to its success. The


00:08:12.879 --> 00:08:14.790
research team is now working to refine


00:08:14.800 --> 00:08:17.270
their spatial mode sorter to reduce what


00:08:17.280 --> 00:08:19.830
they call optical cross talk essentially


00:08:19.840 --> 00:08:21.909
light leakage between channels that can


00:08:21.919 --> 00:08:24.309
contaminate the results. While


00:08:24.319 --> 00:08:26.029
manageable in moderate contrast


00:08:26.039 --> 00:08:28.230
scenarios, the extreme brightness


00:08:28.240 --> 00:08:30.629
differences in exoplanet studies demand


00:08:30.639 --> 00:08:33.350
exceptional light isolation. Beyond


00:08:33.360 --> 00:08:35.269
astronomy, the techniques developed for


00:08:35.279 --> 00:08:37.269
this coronagraph could have applications


00:08:37.279 --> 00:08:39.870
in other fields like quantum sensing,


00:08:39.880 --> 00:08:42.790
communications, and advanced imaging.


00:08:42.800 --> 00:08:44.790
It's yet another example of how the


00:08:44.800 --> 00:08:47.470
quest to explore other worlds drives


00:08:47.480 --> 00:08:49.990
innovation that benefits multiple


00:08:50.000 --> 00:08:52.790
scientific disciplines.


00:08:52.800 --> 00:08:55.269
Early birds, mark your calendars. An


00:08:55.279 --> 00:08:57.110
exceptional celestial event is about to


00:08:57.120 --> 00:08:59.990
grace our pre-dawn skies on April 24th


00:09:00.000 --> 00:09:01.990
when a striking mini planetary parade


00:09:02.000 --> 00:09:04.150
will unfold, featuring Mercury, Venus,


00:09:04.160 --> 00:09:06.470
Saturn, Neptune, and Earth's moon, all


00:09:06.480 --> 00:09:07.990
clustering in the same region of the


00:09:08.000 --> 00:09:10.710
sky. This cosmic alignment offers a rare


00:09:10.720 --> 00:09:12.550
and beautiful photo opportunity for


00:09:12.560 --> 00:09:14.710
astronomy enthusiasts and early risers


00:09:14.720 --> 00:09:16.790
alike. What makes these planetary


00:09:16.800 --> 00:09:18.710
alignments so fascinating is the


00:09:18.720 --> 00:09:20.870
illusion they create, though separated


00:09:20.880 --> 00:09:22.710
by hundreds of millions of miles in


00:09:22.720 --> 00:09:25.190
space, their orbital positions will


00:09:25.200 --> 00:09:27.230
temporarily align from our earthly


00:09:27.240 --> 00:09:29.190
perspective, making them appear


00:09:29.200 --> 00:09:32.070
remarkably close together in our sky. To


00:09:32.080 --> 00:09:34.230
witness this celestial gathering, you'll


00:09:34.240 --> 00:09:36.550
need to set your alarm clock early. Look


00:09:36.560 --> 00:09:39.590
toward the eastern horizon around 5:15


00:09:39.600 --> 00:09:41.829
a.m. local time, where you'll first spot


00:09:41.839 --> 00:09:44.870
the moon as a thin, waning crescent,


00:09:44.880 --> 00:09:47.030
approaching its new moon phase that will


00:09:47.040 --> 00:09:49.590
arrive on April 27th. Its delicate,


00:09:49.600 --> 00:09:51.509
slender form will be hovering low on the


00:09:51.519 --> 00:09:53.670
horizon, creating a stunning visual


00:09:53.680 --> 00:09:55.389
anchor for the planetary


00:09:55.399 --> 00:09:57.509
procession. Directly to the left of the


00:09:57.519 --> 00:09:59.110
moon, you'll find Venus shining


00:09:59.120 --> 00:10:02.150
brilliantly as our current morning star.


00:10:02.160 --> 00:10:03.829
Venus has recently transitioned to


00:10:03.839 --> 00:10:05.430
morning visibility following its


00:10:05.440 --> 00:10:08.310
inferior solar conjunction on March 23rd


00:10:08.320 --> 00:10:09.990
when it passed between Earth and the


00:10:10.000 --> 00:10:12.070
Sun, ending its appearance in our


00:10:12.080 --> 00:10:15.269
evening skies. Saturn can be located by


00:10:15.279 --> 00:10:16.870
looking slightly down and to the right


00:10:16.880 --> 00:10:19.590
of Venus. The ringed planet will appear


00:10:19.600 --> 00:10:22.310
as a steady yellowish point of light.


00:10:22.320 --> 00:10:24.389
Mercury will be the last of the easily


00:10:24.399 --> 00:10:27.110
visible planets to rise, requiring a


00:10:27.120 --> 00:10:29.829
clear, unobstructed eastern horizon to


00:10:29.839 --> 00:10:31.990
be spotted before sunrise. swallows it


00:10:32.000 --> 00:10:35.190
in growing daylight. Neptune, the most


00:10:35.200 --> 00:10:37.509
distant world in this cosmic lineup,


00:10:37.519 --> 00:10:39.350
will be nestled in the center of this


00:10:39.360 --> 00:10:41.910
planetary triangle. However, at


00:10:41.920 --> 00:10:45.190
magnitude 7.9, this ice giant will


00:10:45.200 --> 00:10:47.990
remain invisible to the naked eye. Those


00:10:48.000 --> 00:10:50.150
hoping to glimpse Neptune's pale blue


00:10:50.160 --> 00:10:52.710
green disc will need a telescope or


00:10:52.720 --> 00:10:54.949
powerful binoculars.


00:10:54.959 --> 00:10:56.949
This April alignment follows February's


00:10:56.959 --> 00:10:59.269
more expansive planetary parade, which


00:10:59.279 --> 00:11:01.190
featured all five of our solar systems


00:11:01.200 --> 00:11:04.550
brightest planets, Venus, Jupiter, Mars,


00:11:04.560 --> 00:11:07.110
Saturn, and Mercury, plus the ice giants


00:11:07.120 --> 00:11:09.670
Neptune and Uranus. While this week's


00:11:09.680 --> 00:11:12.069
gathering is more modest in scale, the


00:11:12.079 --> 00:11:13.750
addition of the waning crescent moon


00:11:13.760 --> 00:11:15.829
adds a particularly photogenic element


00:11:15.839 --> 00:11:18.470
that photographers won't want to miss.


00:11:18.480 --> 00:11:19.829
If you're planning to capture this


00:11:19.839 --> 00:11:21.750
celestial event, be sure to scout a


00:11:21.760 --> 00:11:24.310
location with a clear eastern horizon,


00:11:24.320 --> 00:11:26.190
free from obstructions and light


00:11:26.200 --> 00:11:28.230
pollution. Remember that observing


00:11:28.240 --> 00:11:30.949
objects near the horizon often requires


00:11:30.959 --> 00:11:33.269
patience as atmospheric conditions can


00:11:33.279 --> 00:11:36.310
affect visibility. And always exercise


00:11:36.320 --> 00:11:38.630
caution when viewing celestial objects


00:11:38.640 --> 00:11:41.350
near sunrise. Never look directly at the


00:11:41.360 --> 00:11:44.150
sun without proper solar filters.


00:11:44.160 --> 00:11:46.310
This mini planetary parade is just one


00:11:46.320 --> 00:11:48.630
of many astronomical treats visible this


00:11:48.640 --> 00:11:51.110
northern spring, offering a perfect


00:11:51.120 --> 00:11:52.949
opportunity to connect with our cosmic


00:11:52.959 --> 00:11:55.190
neighborhood before dawn breaks on an


00:11:55.200 --> 00:11:57.190
ordinary Wednesday that will briefly


00:11:57.200 --> 00:11:58.949
become extraordinary for those who know


00:11:58.959 --> 00:11:59.870
where to


00:11:59.880 --> 00:12:02.310
look. And while you're in the mood to be


00:12:02.320 --> 00:12:04.550
looking up, here's another treat for


00:12:04.560 --> 00:12:07.269
you. While most asteroids remain dim


00:12:07.279 --> 00:12:09.590
specs visible only through telescopes,


00:12:09.600 --> 00:12:12.030
Asteroid Vesta is quite the celestial


00:12:12.040 --> 00:12:14.470
standout. Reaching opposition on May


00:12:14.480 --> 00:12:17.430
2nd, Vesta will achieve peak brightness,


00:12:17.440 --> 00:12:19.670
becoming visible even to the naked eye


00:12:19.680 --> 00:12:21.710
if you're observing from a dark sky


00:12:21.720 --> 00:12:24.150
location. This remarkable visibility


00:12:24.160 --> 00:12:27.110
isn't just a coincidence. Vesta occupies


00:12:27.120 --> 00:12:29.269
a unique position in our solar system as


00:12:29.279 --> 00:12:31.990
both asteroid and protolanet. NASA's


00:12:32.000 --> 00:12:34.389
Dawn mission, which orbited Vesta for 14


00:12:34.399 --> 00:12:37.430
months between 2011 and 2012, revealed


00:12:37.440 --> 00:12:39.430
fascinating details about this enigmatic


00:12:39.440 --> 00:12:41.590
world. Its surface contains highly


00:12:41.600 --> 00:12:43.509
reflective basaltic rock alongside


00:12:43.519 --> 00:12:45.509
darker carbonatous material delivered by


00:12:45.519 --> 00:12:48.310
meteorite impacts. What makes Vesta


00:12:48.320 --> 00:12:50.949
truly special is its unusual brightness,


00:12:50.959 --> 00:12:53.110
which scientists now believe stems from


00:12:53.120 --> 00:12:54.750
its early planetary


00:12:54.760 --> 00:12:57.670
development. A 2012 study of a Vesta


00:12:57.680 --> 00:12:59.910
meteorite discovered evidence of an


00:12:59.920 --> 00:13:02.790
ancient magnetic field that existed 3.7


00:13:02.800 --> 00:13:05.590
billion years ago. This confirms that


00:13:05.600 --> 00:13:07.509
Vesta is one of the few confirmed


00:13:07.519 --> 00:13:09.990
protolanets in our solar system. During


00:13:10.000 --> 00:13:12.230
its embionic planetary phase more than 4


00:13:12.240 --> 00:13:14.629
billion years ago, Vesta's interior was


00:13:14.639 --> 00:13:16.629
hot enough to melt and differentiate


00:13:16.639 --> 00:13:19.350
into distinct layers, a metallic iron


00:13:19.360 --> 00:13:22.710
core, dense mantle, and outer crust. The


00:13:22.720 --> 00:13:24.790
molten metal within its core generated


00:13:24.800 --> 00:13:27.350
an asteroidwide magnetic field that


00:13:27.360 --> 00:13:29.430
likely shielded Vesta's surface from the


00:13:29.440 --> 00:13:31.190
solar wind and cosmic rays that


00:13:31.200 --> 00:13:32.870
typically darken surface minerals


00:13:32.880 --> 00:13:34.389
through a process called space


00:13:34.399 --> 00:13:37.030
weathering. This protective magnetic


00:13:37.040 --> 00:13:38.949
field may explain why Vesta maintains


00:13:38.959 --> 00:13:41.190
its radiant appearance today, making it


00:13:41.200 --> 00:13:43.230
an accessible target for amateur


00:13:43.240 --> 00:13:45.350
astronomers. Currently shining at a


00:13:45.360 --> 00:13:48.470
robust magnitude 5.7, Vesta is tracking


00:13:48.480 --> 00:13:50.550
from northern Libra into Virgo this


00:13:50.560 --> 00:13:53.030
month and next. Even modest pocket


00:13:53.040 --> 00:13:55.590
binoculars will reveal its presence. For


00:13:55.600 --> 00:13:57.350
those hoping to spot Vesta without


00:13:57.360 --> 00:14:00.550
optical aid, try this technique. First,


00:14:00.560 --> 00:14:02.629
confirm its position with binoculars.


00:14:02.639 --> 00:14:04.629
Then use nearby stars to create a


00:14:04.639 --> 00:14:06.310
distinctive pattern that includes the


00:14:06.320 --> 00:14:09.350
asteroid. By employing averted vision,


00:14:09.360 --> 00:14:10.870
looking slightly to the side of your


00:14:10.880 --> 00:14:13.110
target rather than directly at it, you


00:14:13.120 --> 00:14:15.750
can gradually coax Vesta into view. The


00:14:15.760 --> 00:14:19.350
2.6 magnitude star Beta Libé, also known


00:14:19.360 --> 00:14:21.910
as Zubaneshali, and fourth magnitude


00:14:21.920 --> 00:14:23.829
Mujanice provide useful reference


00:14:23.839 --> 00:14:25.189
points.


00:14:25.199 --> 00:14:27.030
Stargazers have a special opportunity


00:14:27.040 --> 00:14:30.389
from April 23rd through 27th when Vesta


00:14:30.399 --> 00:14:33.030
will lie within just 35 arc minutes of


00:14:33.040 --> 00:14:37.430
the 4.5 magnitude star 16 library. As


00:14:37.440 --> 00:14:39.590
Vesta slides northwest in retrograde


00:14:39.600 --> 00:14:42.310
motion, it will form a temporary double


00:14:42.320 --> 00:14:45.430
star with its stellar companion. This


00:14:45.440 --> 00:14:47.269
alignment makes locating the asteroid


00:14:47.279 --> 00:14:49.269
particularly easy while also


00:14:49.279 --> 00:14:50.990
highlighting its nightto-ightight


00:14:51.000 --> 00:14:54.790
movement. On April 25th and 26th, the


00:14:54.800 --> 00:14:57.030
pair will be separated by a mere 10 ark


00:14:57.040 --> 00:14:59.030
minutes. The night before this close


00:14:59.040 --> 00:15:01.910
approach, Vesta forms a compact nearly


00:15:01.920 --> 00:15:05.870
linear trio with 16 Libri and HD13


00:15:05.880 --> 00:15:09.750
23rd75, a magnitude 6.1 star located 45


00:15:09.760 --> 00:15:12.230
ark minutes to its southeast. These


00:15:12.240 --> 00:15:14.310
alignments offer perfect opportunities


00:15:14.320 --> 00:15:16.949
to track this ancient protolanet as it


00:15:16.959 --> 00:15:19.509
continues its journey around our sun,


00:15:19.519 --> 00:15:21.269
carrying with it the secrets of our


00:15:21.279 --> 00:15:22.990
solar systems early


00:15:23.000 --> 00:15:25.189
formation. And let's wrap up today's


00:15:25.199 --> 00:15:27.829
episode with a celebration. This April


00:15:27.839 --> 00:15:29.829
marks a truly remarkable milestone in


00:15:29.839 --> 00:15:32.470
space exploration as NASA celebrates the


00:15:32.480 --> 00:15:34.710
Hubble Space Telescope's 35th year in


00:15:34.720 --> 00:15:36.949
Earth orbit. To commemorate this


00:15:36.959 --> 00:15:38.949
incredible achievement, NASA is


00:15:38.959 --> 00:15:40.870
releasing a collection of stunning new


00:15:40.880 --> 00:15:43.110
images capturing everything from our


00:15:43.120 --> 00:15:45.990
planetary neighbor Mars to distant star


00:15:46.000 --> 00:15:47.949
forming regions and neighboring


00:15:47.959 --> 00:15:50.389
galaxies. After more than three decades


00:15:50.399 --> 00:15:52.629
of peering into the cosmos, Hubble


00:15:52.639 --> 00:15:55.590
remains not just relevant but iconic.


00:15:55.600 --> 00:15:57.910
The most recognized and scientifically


00:15:57.920 --> 00:16:01.030
productive telescope in human history.


00:16:01.040 --> 00:16:03.110
The Hubble mission stands as a glowing


00:16:03.120 --> 00:16:05.030
testament to American technological


00:16:05.040 --> 00:16:07.829
prowess, scientific curiosity, and


00:16:07.839 --> 00:16:11.310
pioneering spirit. Launched on April 24,


00:16:11.320 --> 00:16:14.870
1990, the 24,000lb observatory was


00:16:14.880 --> 00:16:16.710
delivered to orbit tucked inside the


00:16:16.720 --> 00:16:19.670
space shuttle Discovery's cargo bay. At


00:16:19.680 --> 00:16:21.990
the time, NASA commentators described


00:16:22.000 --> 00:16:25.030
Hubble as a new window on the universe,


00:16:25.040 --> 00:16:26.870
a promise the telescope has fulfilled


00:16:26.880 --> 00:16:30.069
beyond anyone's wildest expectations.


00:16:30.079 --> 00:16:31.670
The telescope's journey hasn't been


00:16:31.680 --> 00:16:32.509
without


00:16:32.519 --> 00:16:34.629
challenges. Shortly after launch,


00:16:34.639 --> 00:16:36.790
engineers discovered an unexpected flaw


00:16:36.800 --> 00:16:39.269
in Hubble's nearly 8ft diameter primary


00:16:39.279 --> 00:16:41.430
mirror. This early setback was


00:16:41.440 --> 00:16:43.430
dramatically overcome when astronauts


00:16:43.440 --> 00:16:45.189
performed the first shuttle servicing


00:16:45.199 --> 00:16:48.069
mission in December 1993, installing


00:16:48.079 --> 00:16:50.069
corrective optics that restored Hubble's


00:16:50.079 --> 00:16:52.150
intended sharpness.


00:16:52.160 --> 00:16:54.389
Over the years, astronauts returned to


00:16:54.399 --> 00:16:57.030
Hubble four more times, upgrading its


00:16:57.040 --> 00:16:59.030
cameras, computers, and support systems


00:16:59.040 --> 00:17:00.949
during servicing missions that continued


00:17:00.959 --> 00:17:01.949
until


00:17:01.959 --> 00:17:04.630
2009. The numbers behind Hubble's legacy


00:17:04.640 --> 00:17:07.270
are staggering. To date, the telescope


00:17:07.280 --> 00:17:10.309
has made nearly 1.7 million observations


00:17:10.319 --> 00:17:12.630
targeting approximately 55,000


00:17:12.640 --> 00:17:15.510
astronomical objects. These observations


00:17:15.520 --> 00:17:17.909
have resulted in over 22,000 scientific


00:17:17.919 --> 00:17:19.990
papers and more than 1.3 million


00:17:20.000 --> 00:17:22.710
citations. The data collected by Hubble


00:17:22.720 --> 00:17:25.829
currently totals over 400 terabytes, the


00:17:25.839 --> 00:17:27.669
largest data set for any NASA


00:17:27.679 --> 00:17:29.430
astrophysics mission aside from the


00:17:29.440 --> 00:17:30.909
James Web Space


00:17:30.919 --> 00:17:33.350
Telescope. Hubble's long operational


00:17:33.360 --> 00:17:35.029
life has given astronomers the


00:17:35.039 --> 00:17:37.430
unprecedented ability to observe cosmic


00:17:37.440 --> 00:17:39.590
changes occurring over decades. From


00:17:39.600 --> 00:17:41.510
seasonal variations on planets in our


00:17:41.520 --> 00:17:43.510
solar system to black hole jets


00:17:43.520 --> 00:17:45.990
traveling at nearly light speed, stellar


00:17:46.000 --> 00:17:48.710
convulsions, asteroid collisions, and


00:17:48.720 --> 00:17:50.950
expanding supernova remnants. The


00:17:50.960 --> 00:17:52.789
telescope's impact on our understanding


00:17:52.799 --> 00:17:55.669
of the universe cannot be overstated.


00:17:55.679 --> 00:17:57.909
Before Hubble, powerful groundbased


00:17:57.919 --> 00:17:59.830
telescopes could see only halfway across


00:17:59.840 --> 00:18:01.990
the cosmos, and estimates for the


00:18:02.000 --> 00:18:05.110
universe's age varied widely. super


00:18:05.120 --> 00:18:06.710
massive black holes were merely


00:18:06.720 --> 00:18:09.350
suspected to exist and no planets had


00:18:09.360 --> 00:18:12.150
been detected around other stars. Among


00:18:12.160 --> 00:18:14.390
Hubble's groundbreaking achievements,


00:18:14.400 --> 00:18:16.710
its deep field images revealed countless


00:18:16.720 --> 00:18:18.470
galaxies dating back to the early


00:18:18.480 --> 00:18:20.710
universe. It allowed scientists to


00:18:20.720 --> 00:18:22.390
precisely measure the universe's


00:18:22.400 --> 00:18:24.870
expansion rate. It confirmed that super


00:18:24.880 --> 00:18:26.909
massive black holes are common among


00:18:26.919 --> 00:18:29.270
galaxies, and it enabled the first


00:18:29.280 --> 00:18:32.230
measurements of exoplanet atmospheres.


00:18:32.240 --> 00:18:34.470
Perhaps most significantly, Hubble


00:18:34.480 --> 00:18:36.230
contributed to the discovery of dark


00:18:36.240 --> 00:18:38.470
energy, the mysterious force


00:18:38.480 --> 00:18:40.470
accelerating the universe's expansion


00:18:40.480 --> 00:18:43.870
work that led to the 2011 Nobel Prize in


00:18:43.880 --> 00:18:46.510
physics. The telescope's continued


00:18:46.520 --> 00:18:49.270
productivity has inspired and paved the


00:18:49.280 --> 00:18:51.789
way for a new generation of space


00:18:51.799 --> 00:18:54.070
observatories. Hubble provided the first


00:18:54.080 --> 00:18:56.150
evidence of the distant galaxies that


00:18:56.160 --> 00:18:58.150
the James Web Space Telescope now


00:18:58.160 --> 00:19:00.789
studies in infrared wavelengths.


00:19:00.799 --> 00:19:03.190
Today, the two observatories often work


00:19:03.200 --> 00:19:05.350
in tandem, complementing each other's


00:19:05.360 --> 00:19:07.350
capabilities to study everything from


00:19:07.360 --> 00:19:10.310
exoplanets to galaxy evolution. Looking


00:19:10.320 --> 00:19:12.870
ahead, Hubble's planned successor, the


00:19:12.880 --> 00:19:14.950
Habitable World's Observatory, will


00:19:14.960 --> 00:19:17.270
feature a significantly larger mirror


00:19:17.280 --> 00:19:19.669
for observing invisible and ultraviolet


00:19:19.679 --> 00:19:21.990
light. It will be notably sharper than


00:19:22.000 --> 00:19:24.390
Hubble and up to 100 times more


00:19:24.400 --> 00:19:26.710
sensitive to starlight with a major goal


00:19:26.720 --> 00:19:28.630
of identifying potentially habitable


00:19:28.640 --> 00:19:30.990
terrestrial planets around neighboring


00:19:31.000 --> 00:19:33.430
stars. As Hubble continues making


00:19:33.440 --> 00:19:35.110
groundbreaking discoveries that shape


00:19:35.120 --> 00:19:36.870
our fundamental understanding of the


00:19:36.880 --> 00:19:39.750
universe, its legacy as humanity's most


00:19:39.760 --> 00:19:41.909
successful space telescope remains


00:19:41.919 --> 00:19:44.150
secure. A remarkable scientific


00:19:44.160 --> 00:19:46.310
instrument that has truly changed how we


00:19:46.320 --> 00:19:49.510
see our place in the cosmos.


00:19:49.520 --> 00:19:51.190
And that brings us to the end of today's


00:19:51.200 --> 00:19:53.830
cosmic journey on Astronomy Daily. What


00:19:53.840 --> 00:19:55.909
an incredible array of discoveries and


00:19:55.919 --> 00:19:57.909
celestial events we've covered. From


00:19:57.919 --> 00:20:00.390
China's ambitious lunar nuclear plans to


00:20:00.400 --> 00:20:02.510
revolutionary exoplanet detection


00:20:02.520 --> 00:20:05.430
technology, April's mini planet parade,


00:20:05.440 --> 00:20:07.990
asteroid Vesta's visibility, and of


00:20:08.000 --> 00:20:10.270
course, Hubble's remarkable 35-year


00:20:10.280 --> 00:20:12.950
legacy. I'm Anna, and I want to thank


00:20:12.960 --> 00:20:14.710
you for joining me today as we explored


00:20:14.720 --> 00:20:16.710
these fascinating developments in space


00:20:16.720 --> 00:20:19.270
and astronomy. The universe never ceases


00:20:19.280 --> 00:20:21.669
to amaze us with its wonders, and I'm


00:20:21.679 --> 00:20:23.110
grateful to share these stories with


00:20:23.120 --> 00:20:25.669
you. If you're hungry for more astronomy


00:20:25.679 --> 00:20:28.070
news, I invite you to visit our website


00:20:28.080 --> 00:20:29.230
at


00:20:29.240 --> 00:20:31.029
astronomydaily.io, where you can catch


00:20:31.039 --> 00:20:33.270
up on all the latest space and astronomy


00:20:33.280 --> 00:20:35.190
happenings through our constantly


00:20:35.200 --> 00:20:38.230
updating news feed. You'll also find our


00:20:38.240 --> 00:20:40.950
complete archive of past episodes there,


00:20:40.960 --> 00:20:42.870
perfect for diving deeper into the


00:20:42.880 --> 00:20:46.070
cosmic topics that interest you most.


00:20:46.080 --> 00:20:47.510
Don't forget to subscribe to Astronomy


00:20:47.520 --> 00:20:49.350
Daily on all good podcast platforms,


00:20:49.360 --> 00:20:51.830
including Apple Podcasts, Spotify,


00:20:51.840 --> 00:20:54.070
YouTube, YouTube Music, or wherever you


00:20:54.080 --> 00:20:56.070
get your podcasts. That way, you'll


00:20:56.080 --> 00:20:57.830
never miss an episode as we continue our


00:20:57.840 --> 00:20:59.909
journey through the cosmos together.


00:20:59.919 --> 00:21:01.590
Until next time, keep looking up and


00:21:01.600 --> 00:21:03.270
wondering about the magnificent universe


00:21:03.280 --> 00:21:06.070
we call home. This is Anna for Astronomy


00:21:06.080 --> 00:21:18.230
Daily, signing off.


00:21:18.240 --> 00:21:20.760
The stories


00:21:20.770 --> 00:21:25.390
[Music]


00:21:25.400 --> 00:21:29.120
told stories