Dec. 3, 2024

S03E222: Venus's Ocean Mystery, Gravitational Wave Breakthrough, and China's Satellite Milestone

S03E222: Venus's Ocean Mystery, Gravitational Wave Breakthrough, and China's Satellite Milestone

Astronomy Daily - The Podcast: S03E222
Welcome to Astronomy Daily, your go-to source for the latest cosmic discoveries and space exploration news. I'm your host, Anna, and today we have a thrilling lineup of stories that will take you from Venus's...

Season 3
Astronomy Daily - The Podcast: S03E222
Welcome to Astronomy Daily, your go-to source for the latest cosmic discoveries and space exploration news. I'm your host, Anna, and today we have a thrilling lineup of stories that will take you from Venus's ancient mysteries to groundbreaking gravitational wave mapping.
Highlights:
- Venus's Ocean Mystery: Dive into new research that finally answers whether Venus, often called Earth's twin, ever had oceans. Discover the stark findings from the study published in Nature Astronomy that reveal Venus's dry past and how it diverged from Earth.
- Gravitational Wave Breakthrough: Explore the extraordinary advancements in gravitational wave mapping by Australian astrophysicists. Learn about the detailed maps created using the Meerkat Pulsar Timing Array, revealing unexpected hotspots and insights into supermassive black holes.
- China's Satellite Milestone: Celebrate China's successful deployment of AppStar 6e, their first all-electric propulsion telecommunications satellite. Understand how this innovative technology marks a significant step forward in satellite operations and space communications.
- Space Launch Frenzy: Catch up on a busy week of space launches with 10 orbital missions planned. From SpaceX's ambitious Falcon 9 schedule to China's classified launches and Europe's solar observation missions, discover the dynamic nature of modern space operations.
- BepiColombo's Mercury Encounter: Follow the ESA and JAXA's BepiColombo spacecraft as it completes its fifth flyby of Mercury. Learn about the new images and data captured, and the mission's progress towards unraveling Mercury's mysteries.
For more cosmic updates, visit our website at astronomydaily.io. Sign up for our free Daily newsletter to stay informed on all things space. Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTube, Tumblr, and TikTok. Share your thoughts and connect with fellow space enthusiasts.
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.
Become a supporter of this podcast for commercial free episodes etc. Details at https://spacenutspodcast.com/about
✍️ Episode References
Nature Astronomy
https://www.nature.com/natastron/
OSGRAV
https://www.osgrav.org.au/
Swinburne University
https://www.swinburne.edu.au/
Meerkat Pulsar Timing Array
https://www.sarao.ac.za/science/meerkat/
China Academy of Space Technology
http://www.cast.cn/
AppStar Alliance Satcom Ltd
http://www.appstar.com.hk/
European Space Agency
https://www.esa.int/
JAXA
https://global.jaxa.jp/
Ariane 5 rocket
https://www.arianespace.com/vehicle/ariane-5/
SpaceX
https://www.spacex.com/


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

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Welcome to another exciting episode of Astronomy Daily. We have

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a fascinating lineup of stories for you today, packed with

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groundbreaking discoveries and remarkable achievements in space exploration. We'll delve

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into new research that finally answers whether Venus, often called

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Earth's twin, ever had oceans on its surface. Then we'll

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explore an extraordinary breakthrough in gravitational wave mapping that's giving

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us unprecedented insights into the architecture of our universe. We'll

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also look at China's latest milestone in satellite technology, catch

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up on an incredibly busy week of space launches, and

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follow BEPI Colombo's latest encounter with Mercury that's bringing us

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haunting new images of the Solar System's innermost planet. Stay

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with us as we journey through these remarkable developments in

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space and astronomy that continue to expand our understanding of

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the Cosmos. Let's get started. Recent research has provided compelling

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evidence about Venus's ancient history, definitively answering whether our planetary

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neighbour ever hosted oceans. The study, published in Nature Astronomy

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examined the chemical composition of Venus' atmosphere to determine the

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water content of the planet's interior, a crucial indicator of

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its past conditions. The findings paint a stark picture of

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Venus's history. By analyzing volcanic gases in the planet's atmosphere,

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scientists discovered that Venusian eruptions contain no more than six

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percent water vapor, a dramatic contrast to Earth's volcanic emissions,

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which are more than sixty percent water vapor. This indicates

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that Venus has always had a substantially dry interior, suggesting

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the planet never experience the conditions necessary for oceans to form.

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The research challenges previous hypotheses about Venus potentially harboring a

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hidden reservoir of water beneath its surface, a remnant of

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a lost ocean. Instead, the evidence supports the theory that

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Venus remained parched after its early molten rock phase, never

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developing the canitions we associate with habitability. While Venus and

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Earth are often called sister planets due to their similar size, mass, density,

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and distance from the Sun, their evolutionary paths diverged dramatically. Today,

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Venus presents extreme conditions that bear little resemblance to Earth

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with surface temperatures reaching four hundred and sixty five degrees celsius,

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atmospheric pressure ninety times greater than Earth's, and toxic clouds

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of sulfuric acid. This research provides valuable insights into planetary

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evolution and the factors that determine habitability. It suggests that

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Venus's current hostile environment isn't the result of losing its

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oceans over time, but rather reflects conditions that have persisted

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throughout most of its history. The findings help us better

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understand why Earth and Venus, despite their initial similarities, developed

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such dramatically different environments. In a groundbreaking development, Australian astrophysicists

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have created the most detailed maps of gravitational waves ever produced,

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offering unprecedented insights into the universe's most massive black holes

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and their cosmic influence. Led by Matt Miles from OSGREV

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and Swinburne University, this international effort has revealed a more

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dynamic and active universe than previously anticipated. The mapping project

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utilized the mere Cat Pulsar Timing Array, the largest galactic

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scale gravitational wave detector ever built by observing pulsars rapidly

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spinning neutron stars that act as precise cosmic timekeepers. Researchers

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could detect minuscule changes caused by gravitational waves with remarkable

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nanosecond level precision. One of the most intriguing discoveries is

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an unexpected hot spot in the gravitational wave signal. According

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to Rowena Nathan from osgrav and Monash University, this hot

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spot could indicate the presence of a pair of black

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holes billions of times more massive than our Sun. This

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finding challenges the previous assumption that the background signal would

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be us to form across the sky. The team's observations

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captured a stronger signal of background gravitational waves than similar

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global experiments, and remarkably, they achieved this in just one

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third of the time. This enhanced detection capability opens new

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possibilities for studying the echoes of cosmic events that occurred

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billions of years ago. These maps serve as a powerful

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tool for understanding the universe's structure and evolution. They're helping

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scientists track the locations and numbers of merging supermassive black holes,

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explore the origins of these cosmic giants, and even provide

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insights into major events from our universe's early history. This

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research represents a significant step forward in our ability to

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observe and understand the gravitational architecture of our cosmos. China

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has marked a significant milestone in satellite technology with the

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successful deployment and handover of Apstar six e, their first

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all electric propulsion telecommunications satellite. This achievement represents a major

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advancement in satellite operations and demonstrates China's growing capabilities in

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space technology. The satellite, developed by the China Academy of

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Space Technology, operates from geostationary orbit using the advanced DFH

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three E platform. What makes this satellite particularly noteworthy is

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its innovative propulsion system. Rather than traditional chemical propulsion, it

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relies entirely on electric propulsion technology to maintain its orbital

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position and make adjustments. Launched earlier this year aboard a

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long March two sea rocket from the Sheichung Satellite Launch Center,

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app Star sixe successfully transitioned to its geostationary orbit using

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only its electric propulsion systems after separating from its propulsion module.

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This approach not only demonstrates remarkable efficiency, but also represents

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a more cost effective method of satellite deployment. The satellite,

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which has been designed for a fifteen year operational lifespan,

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is now being operated by Hong Kong based app Star

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Alliance Satcom Limited. Its primary mission is to provide affordable,

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high throughput broadband communication services, with a particular focus on

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serving customers in Indonesia. This technological advancement not only showcases

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China's growing expertise in satellite technology, but also represents a

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significant step forward in making space based communications more accessible

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and sustainable. This successful deployment adds China to a select

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group of nations capable of developing and operating all electric

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propulsion satellites, marking another significant milestone in the ongoing evolution

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of space technology. Space launch activities are reaching a fever

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pitch this week, with an impressive lineup of ten orbital

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launches planned. SpaceX is leading the charge with an ambitious

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schedule of five Falcon nine launches in just five days,

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showcasing the company's remarkable launch cadence capabilities. Four of these

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SpaceX missions will be dedicated to expanding their stars Link

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satellite constellation, while the fifth will carry SXM nine, a

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digital audio radio satellite for seriousxm These launches will take

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place from both coasts of the United States, utilizing launch

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facilities in California and Florida. China is maintaining its strong

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presence in space activities with three launches scheduled this week.

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While details about some of these missions remain classified, we

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know they'll be using various vehicles from their long March

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rocket family, including their newer Kwaijo one, a quick reaction vehicle.

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The European space sector has two particularly noteworthy launches on

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the schedule. The first involves India's PSLV XCEL rocket carrying

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a pair of European spacecraft designed for solar observation. The

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second is the much anticipated launch of the Sentinel one

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s radar satellite aboard a Vegas Sea rocket from French Guiana,

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a mission that has faced significant delays following a launch

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failure last year. Russia is also joining the launch lineup

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with a planned Soyuz mission from their Placetsk Cosmodrome carrying

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a military satellite designated as Cosmos twenty five to eighty.

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This launch had been previously delayed, but is now scheduled

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to proceed this week, adding to the week's activities SpaceX's

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CRS thirty one cargo Dragon spacecraft is scheduled to depart

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from the International Space Station and return to Earth via splashdown.

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Once recovered, this vessel will be refurbished for future cargo

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missions to the station, demonstrating the ongoing benefits of reusable

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spacecraft technology. This concentrated burst of launch activity reflects the

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increasingly dynamic nature of modern space operations, with multiple nations

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and private companies working simultaneously to expand humanity's presence in orbit.

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The European Space Agency and jacksa's BEPI Columbo spacecraft has

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just completed its fifth flyby of Mercury, marking another crucial

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milestone in its journey to study our Solar System's innermost planet.

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Unlike its previous approach, which brought the probe within just

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one hundred and three miles of Mercury's surface, this latest

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flyby occurred at a much greater distance, approximately two hundred

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times farther out. Despite the increased distance, BEPI Colombo managed

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to capture another striking image of Mercury standing alone against

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the darkness of space. This flyby was particularly significant as

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it marked the first use of the Probe's Mercury Radiometer

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and Thermal Infrared Spectrometer, known as MYRTIS. This sophisticated instrument

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is designed to measure the planet's surface temperature and composition,

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helping scientists identify the types of minerals present on Mercury,

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one of the key mysteries this mission aims to unravel. Bepy.

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Columbo began its ambitious journey in twenty eighteen, launched aboard

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an ARIANE five rocket. While originally scheduled to enter Mercury's

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orbit in December twenty twenty five, some thruster issues have

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slightly extended the timeline, with orbital insertion now planned for

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November twenty twenty six. Once there, the spacecraft will split

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into two separate orbiters, Issa's Mercury Planetary Orbiter and Jacksa's

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Mercury Magnetospheric Orbiter, with sixteen different scientific instruments to study

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this mysterious world. The probe has been using a series

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of carefully planned planetary flybys since twenty twenty, utilizing the

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gravity of Earth, Venus, and Mercury to gradually adjust its trajectory.

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After successful passes of Earth and Venus and previous Mercury

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encounters in twenty twenty one, twenty twenty two, and twenty

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twenty three. The probe now has just one more Mercury

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fly by remaining scheduled for January eighth, twenty twenty five,

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before it begins its final approach to establish orbit around

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the planet. And that brings us to the end of

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today's Astronomy Daily. I'm Anna, and I want to thank

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you for joining me as we explored the latest developments

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in space and astronomy, from Venus's ancient mysteries to Bepy

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Columbo's ongoing mission to Mercury. There's always something fascinating happening

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in our cosmic neighborhood. If you'd like to stay up

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to date with all things space and astronomy, head over

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to our website at astronom to Me daily dot io.

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There you can sign up for our free daily newsletter

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and explore our constantly updating news feed with all the

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latest space news. While you're there, don't forget to check

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out our complete archive of past episodes. Want to be

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