Jan. 29, 2025

Volcanic Wonders, Super Earth Seasons, and Supersonic Flight Milestones: S04E25

Astronomy Daily - The Podcast: S04E25
In this episode of Astronomy Daily, host Anna dives into a thrilling array of recent developments in space exploration and astronomy. From unprecedented volcanic activity on Jupiter's moon Io to a newly discovered...

Show Notes
Transcript

Astronomy Daily - The Podcast: S04E25
In this episode of Astronomy Daily, host Anna dives into a thrilling array of recent developments in space exploration and astronomy. From unprecedented volcanic activity on Jupiter's moon Io to a newly discovered asteroid with potential Earth impact risk, this episode is filled with compelling stories that highlight the dynamic nature of our universe.
Highlights:
- Volcanic Activity on Io: Discover the groundbreaking findings from NASA's Juno mission, revealing the most powerful volcanic event ever recorded in our solar system on Jupiter's moon Io, with a hotspot larger than Earth's Lake Superior and an astonishing power output exceeding 80 trillion watts.
- SpaceX Astronaut Rescue Mission: Learn about Elon Musk's controversial announcement regarding a potential rescue mission for NASA astronauts stranded aboard the International Space Station, and the implications of switching their return vehicle from Boeing's Starliner to SpaceX's Dragon capsule.
- Super Earth Discovery: Explore the intriguing characteristics of the newly discovered super Earth, HD 20794D, which experiences extreme seasonal changes as it orbits in and out of its star's habitable zone, providing a unique opportunity for future atmospheric studies.
- European Space Conference Highlights: Get an overview of the ambitious plans announced at the 17th European Space Conference, including new satellite missions for climate monitoring and preparations for a return to Venus.
- Boom Supersonic's Milestone: Celebrate the historic achievement of Boom Supersonic's XB1 test aircraft, which became the first civil aircraft to break the sound barrier over the continental United States, paving the way for a new era of supersonic passenger travel.
- Potential Asteroid Threat: Stay informed about asteroid 2024 YR4, which poses a 1 in 83 chance of colliding with Earth in December 2032, and learn about ongoing monitoring efforts to assess its trajectory and potential impact risk.
For more cosmic updates, visit our website at astronomydaily.io. Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTubeMusic, Tumblr, and TikTok. Share your thoughts and connect with fellow space enthusiasts. 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 - Astronomy Daily brings you the latest in space and astronomy news
00:50 - SpaceX's astronaut rescue mission announcement
03:20 - Juno's groundbreaking volcanic discovery on Io
06:15 - Super Earth HD 20794D's extreme seasonal changes
09:30 - Highlights from the European Space Conference
12:20 - Boom Supersonic achieves historic milestone
15:00 - Potential threat from asteroid 2024 YR4
✍️ Episode References
NASA
[NASA](https://www.nasa.gov)
Juno Mission
[Juno](https://www.nasa.gov/mission_pages/juno/main/index.html)
Boom Supersonic
[Boom Supersonic](https://boomsupersonic.com)
European Space Agency
[ESA](https://www.esa.int)
Astronomy Daily
[Astronomy Daily](https://www.astronomydaily.io)

Become a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-the-podcast--5648921/support.

WEBVTT

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Welcome to Astronomy Daily. I'm your host, Anna, and we

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have an absolutely packed show for you today, covering some

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of the most exciting developments in space news. We'll be

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exploring an unprecedented volcanic event on Jupiter's moon Io that's

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literally off the charts, take a look at a fascinating

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super earth that experiences extreme seasons as it moves in

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and out of its star's habitable zone, and discuss some

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major updates from the International Space Station. We'll also dive

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into the latest developments from the European Space Conference, celebrate

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a historic achievement in civilian supersonic flight, and examine a

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newly discovered asteroid that's caught the attention of astronomers worldwide.

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So strap in for another journey through the latest discoveries

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and developments in space exploration and astronomy. There's a lot

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to cover, so let's get started. Late today, SpaceX founder

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Elon Musk stirred controversy with an unexpected announcement regarding astronauts

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aboard the International Space Station. In a post on social media,

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Musk claimed space had been asked by President Trump to

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mount a rescue mission to expedite the return of two

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NASA astronauts, Butch Wilmore and Sunny Williams, who have been

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on the ISS since June twenty twenty four. In a

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message posted by Musk on X, he said, the Potus

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has asked SpaceX to bring home the two astronauts stranded

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on the space station as soon as possible. We will

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do so. The astronauts originally traveled to the station aboard

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Boeing Starliner spacecraft during its crew flight test mission. However,

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due to technical concerns with Starliner's propulsion system and helium

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leaks encountered during its journey to the station, NASA made

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the decision to bring the astronauts home aboard SpaceX's Dragon

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capsule instead. NASA has firmly pushed back against any characterization

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that the astronauts are stranded in space, emphasizing that the

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decision to switch return vehicles was made out of an

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abundance of caution, As former NASA administrator Bill Nelson explained

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during a December briefing, after extensive testing at White Sands,

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while they identified the cause of a problematic valve issue,

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they couldn't determine the underlying reason, making it too risky

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to attempt a crude return flight. This situation has required

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some reshuffling of crew assignments. NASA astronauts Xena Cardman and

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Stephanie Wilson have been removed from their planned mission to

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make room for Wilmore and Williams on the upcoming Dragon

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return flight. The new crew arrangement is set to return

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in late February ahead of the Crew ten mission launch,

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which has been delayed to March due to spacecraft readiness issues.

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This transition from Starliner to Dragon highlights both the challenges

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and advantages of NASA's commercial crew program, which maintains multiple

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providers to ensure continued access to the International Space Station.

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While Starliner continues development work toward full certification for regular

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crew rotation missions, SpaceX's Dragon capsule provides the flexibility needed

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to maintain safe operations. This is, of course, a breaking story,

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and I'll keep you posted. In other NASA related news today,

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NASA's junomission has made a groundbreaking discovery on Jupiter's moon Io,

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detecting what scientists are calling the most powerful volcanic event

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ever recorded in our Solar system. And when we're talking

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about Io, that's really saying something as this Moon is

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already known as the most volcanically active world we've ever encountered.

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The hot spot discovered in Io's southern hemisphere is truly massive,

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spanning an area larger than Earth's Lake Superior. But what's

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even more impressive is its raw power output. This single

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volcanic feature is pumping out more than six times the

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total energy produced by all of Earth's power plants combined.

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This remarkable discovery was made using Juno's Jovian Infrared Auroral

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Mapper or JERUM instrument. The hotspot is so intense that

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it actually saturated the detector, suggesting that what appears as

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one massive feature might actually be several closely spaced volcanic

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events occurring simultaneously, hinting at an extensive underground magma chamber system.

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To put the scale of this event in perspective, the

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hotspot covers approximately forty thousand square miles. That's more than

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five times larger than the previous record holder, Io's Loki Ptera,

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which spans about seven thousand, seven hundred square miles. The

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total power output measured from this volcanic region exceeds eighty

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trillion watts, a truly mind boggling figure. This extreme volcanic

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activity is driven by Jupiter itself. Io orbits very close

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to the gas giant, completing a circuit every forty two

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point five hours. The Moon's elliptical orbit means it experiences

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varying gravitational forces as it moves closer to and further

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from Jupiter, resulting in intense tidal forces that literally squeeze

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and stretch the Moon. This constant stress generates enormous amounts

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of heat, melting Io's interior and fueling its estimated four

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hundred active volcanoes. Scientists are particularly excited about this discovery

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as it could enhance our understanding of volcanic processes not

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just on Io, but throughout the Solar System. The JUNOTEAM

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plans to continue monitoring this region during future flybys, tracking

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how this unprecedented volcanic event evolves over time. And yet

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another fascinating discovery just announced. Astronomers have found a remarkable

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super Earth planet orbiting a star only nineteen point seven

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light years from Earth. What makes this planet, designated HD

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two zero seven nine four D, particularly intriguing is its

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unusual orbit that takes it in and out of its

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star's habitable zone. The region where temperatures could allow for

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liquid water on a planet's surface. This super Earth, weighing

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in at about six point six times Earth's mass, follows

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an extremely elongated orbit around its parent star. While most

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planets in our Solar System follow nearly circular paths HD

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two zero seven nine four D's orbit is more like

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a stretched out ellipse, creating what must be extraordinary seasonal changes.

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During its six hundred forty seven day journey around its star,

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the planet swings from a distance equivalent to Mars's orbit

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to about as close as Venus is to our Sun.

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This means that for part of its year, the planet

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experiences conditions that might be too cold for liquid water,

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before passing through the habitable zone and then briefly entering

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a region where temperatures could become uncomfortably hot. Imagine the

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climate on such a world. Long harsh winters when the

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planet is at its furthest point from its star, followed

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by a relatively brief but intense summer as it sweeps

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through the inner part of its orbit. Scientists speculate that

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any oceans might freeze during the winter months, only to

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thaw and potentially even begin evaporating. During the short summer season,

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before freezing again as the planet moves back out the star.

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This super earth orbits, known as h D two zero

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seven nine four or eighty two Aridani, is slightly dimmer

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and less massive than our Sun. Remarkably, it's bright enough

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to be visible to the naked eye from Earth. In

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the constellation Aridyanus. The planet shares its system with two

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other super earths that follow more conventional, nearly circular orbits

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closer to their star. The discovery of this world provides

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an excellent opportunity for future telescopes to study its atmosphere

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and help us understand the extreme limits of planetary habitability.

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Its relatively close proximity to Earth and its unique orbital

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characteristics make it an ideal target for investigating how life

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might adapt to dramatically varying conditions on other worlds. The

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seventeenth European Space Conference has kicked off in Brussels with

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bold declarations about Europe's future in space. European Commissioner for

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Defense in Space, Andreas Kbilius, set an ambitious tone, declaring

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that whoever controls space controls the future. He emphasized that

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Europe must maintain its position as a leading space power,

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calling for unity across the European space ecosystem, the US

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European Space Agency is taking significant steps forward with several

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groundbreaking initiatives. They've secured an Ariane six rocket launch for

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the Sentinel one D satellite, the fourth unit of the

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Copernicus Sentinel one mission. This new satellite will join its

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recently launched sibling, Sentinel one C, to enhance global Earth

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observation capabilities. In a major development for climate monitoring, the

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European Commission has expanded its carbon dioxide monitoring mission. They've

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commissioned a third satellite for the Copernicus Anthropogenic Carbon Dioxide

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Monitoring Mission, which will accelerate global coverage of carbon dioxide

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and methane emissions measurements from human activities. The conference also

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saw the signing of nineteen satellite data agreements, strengthening Europe's

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Earth observation capabilities. These partnerships involve both established industry players

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and emerging space companies, all contributing to the Copernicus space

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data ecosystem. Perhaps most excitingly, Europe is preparing for a

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return to Venus. The European Space Agency has awarded THALLUS

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Alenia Space the contract to build the envisioned spacecraft, which

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will conduct unprecedented investigations of Venus' surface, interior, and atmosphere.

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This mission builds upon the discoveries of Venus Express and

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promises to reveal new insights about our mysterious neighbor. Additionally,

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the ESA has taken steps to ensure rapid access to

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space for European innovations through a series of contracts with

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small satellite makers. These agreements, part of the InOrbit Demonstration

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and Validation program, will help accelerate the testing and deployment

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of new space technologies, maintaining Europe's competitive edge in the

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global space sector. In breaking news from the aviation world,

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Boom Supersonic has achieved a historic milestone today at the

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Mojave Air and Spaceport in California. Their XB one test

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aircraft became the first civil aircraft to break the sound

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barrier over continental United States, marking a significant step toward

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the return of commercial supersonic flight. Chief test pilot Tristan Brandenburg,

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known by his call sign Geppetto, piloted the aircraft to

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an altitude of thirty five thousand feet, where it achieved

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this remarkable feat just eleven point five minutes into its flight.

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The XB one went on to break the sound barrier

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two more times during the thirty minute test flight, allowing

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pilots to thoroughly evaluate the aircraft's supersonic handling characteristics. What

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makes this achievement particularly noteworthy is that it represents the

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first step toward bringing supersonic passenger travel back to civilian

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aviation since the retirement of the Concord in two thousand

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and three. The XB one is serving as a technology

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demonstrator for Boom's ambitious Overture passenger aircraft, which aims to

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carry between sixty four to eighty passengers at supersonic speeds.

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The test flight was monitored by two Chase planes, a

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Dssault Mirage F one fighter jet and a Northrup T

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thirty eight tallon. In a modern twist, the entire event

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was live streamed using SpaceX's Starlink satellite constellation, providing unprecedented

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real time coverage of this aviation milestone. The success of

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today's flight brings Boom Supersonic closer to their goal of

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revolutionizing air travel. The company already has over one hundred

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orders for their planned overture airliner from major carriers worldwide.

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If successful, these aircraft could potentially cut current flight times

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in half, ushering in a new era of faster than

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sound commercial aviation. Finally, today, in concerning news from the

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astronomical community, scientists have identified a newly discovered asteroid that

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poses a potentially serious threat to Earth. Designated as Asteroid

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twenty twenty four y R four, this space rock has

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been calculated to have a one in eighty three chance

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of colliding with our planet in December twenty thirty two.

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The asteroid, measuring approximately one hundred and ninety six feet across,

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about half the length of a football field, is currently

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traveling through space some twenty seven million miles from Earth.

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While that might sound like a safe distance, astronomers are

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closely monitoring its trajectory as it's expected to make an

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extremely close approach to our planet, passing within just sixty

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six thousand miles of Earth's surface. This potential impact risk

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has caught the attention of both NASA's Center of NEEO

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Studies and the European Space Agency, with the asteroid now

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topping both organizations impact risk lists. According to Catalina Sky

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Survey engineer David Rankin this represents one of the highest

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probabilities of impact ever recorded for an asteroid of significant size.

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If it were to strike Earth, the asteroid could cause

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substantial damage. Experts compare it to the nineteen o eight

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Tunguska event in Russia, which flattened eighty million trees across

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eight hundred and thirty square miles when a similar sized

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asteroid exploded in the atmosphere. The current risk corridor for

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potential impact runs from South America across the Atlantic to

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South Africa. However, astronomers emphasize that there's no need for

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immediate panic. The asteroid's orbit is still uncertain and more

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observations are needed to better understand its trajectory. Scientists will

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have another opportunity to study the object more closely in

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twenty twenty eight, when it makes a less risky approach,

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passing about five million miles from Earth. This encounter should

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provide crucial data about its size, composition, and precise orbital path,

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helping to better assess the actual risk it poses. And

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that's all for today's episode of Astronomy Daily. I'm ana

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and it's been my pleasure bringing you the latest developments

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in space and astronomy news. From a potential rescue mission,

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to record breaking volcanic activity on Jupiter's moon Io to

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potential asteroid threats, It's been another fascinating day in space exploration.

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If you'd like to stay up to date with all

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the latest space and astronomy news, head over to Astronomy

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Daily dot io, where you can sign up for our

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free daily newsletter and access our constantly updating news feed.

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While you're there, you can also catch up on all

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our previous episodes. Want more astronomy content, you can find

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us across all major social media platforms. Just search for

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astro Daily Pod on Facebook, x YouTube, YouTube music, and TikTok.

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Thanks for listening, and remember to keep looking up. There's

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always something amazing happening in our universe. See you tomorrow,

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Sunday Stars to start