Aussie Satellite Snapshots, Space Command’s Close Encounter, and the Truth About Water Worlds

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From Comet Closures to Space Station Shifts: Your Daily Astronomy Update 10 min · 20 Dec 2025

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Recorded23 Sep 2025

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Australia's Spirit Satellite Takes Selfies in Orbit: The Spirit nanosatellite has successfully completed its first mission phase, orbiting Earth for over 600 days and taking selfies to confirm its systems are operational. Equipped with an Italian Space Agency instrument to detect gamma ray bursts, Spirit features an autonomous repointing system that allows it to respond immediately to cosmic events, showcasing the potential of AI in space exploration. US and UK Military Satellites Conduct Historic Operation: In a first-of-its-kind event, the US Space Command performed a rendezvous proximity operation with the UK's Skynet 5A satellite in geostationary orbit. This peaceful inspection underscores military cooperation between allies while sending a clear message about capabilities in contested space environments. NASA Introduces New Class of Astronauts: NASA has welcomed its 24th class of astronauts, including a former SpaceX crew member from the all-civilian Inspiration4 mission, highlighting the growing pipeline from commercial spaceflight to NASA. Rocket Launch Roundup: It's been a busy week for launches, featuring SpaceX's deployment of 22 Starlink satellites with a record-setting reusable booster, Rocket Lab's upcoming Electron launch for the US Space Force, and China's successful launch of the Yao' Gon 44 reconnaissance satellite. Exotic Theories on Gravitational Waves: A new paper suggests that the peculiar gravitational wave signal GW 190521 may not be a standard black hole merger but could instead be an echo of a collision from another universe, traveling through a wormhole. While the standard explanation remains the most likely, the hypothesis opens up intriguing possibilities. New Research Challenges Water World Theories: Recent studies on Hycean worlds, previously thought to be covered in vast oceans, indicate that immense pressure and heat may trap water deep within these planets, making them less likely to exist as envisioned. However, this could lead to more Earth-like planets forming with moderate surface water. New Comet C2025R2 Swan Discovered: A newly discovered comet, C2025R2 Swan, is brightening and may become visible to the naked eye by October. Stargazers are encouraged to keep an eye on the sky, especially around its closest approach to Earth on October 21st. 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 Music, 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 and Avery signing off. Until next time, keep looking up and exploring the wonders of our universe. ✍️ Episode References Spirit Satellite Update [Australian Space Agency]( https://www.astronauts.gov.au/ (https://www.astronauts.gov.au/) ) US-UK Military Operation [US Space Command]( https://www.spacecom.mil/ (https://www.spacecom.mil/) ) NASA Astronaut Class Announcement [NASA]( https://www.nasa.gov/ (https://www.nasa.gov/) ) Launch Updates [SpaceX]( https://www.spacex.com/ (https://www.spacex.com/) ) Gravitational Waves Research [Nature]( https://www.nature.com/ (https://www.nature.com/) ) Hycean Worlds Study [Journal of Astrobiology]( https://www.journalofastrobiology.com/ (https://www.journalofastrobiology.com/) ) Comet C2025R2 Swan Discovery [NASA]( https://www.nasa.gov/ (https://www.nasa.gov/) ) 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-space-news-updates--5648921/support (https://www.spreaker.com/podcast/astronomy-daily-space-news-updates--5648921/support?utm_source=rss&utm_medium=rss&utm_campaign=rss) . Sponsor Details: Ensure your online privacy by using NordVPN . To get our special listener deal and save a lot of money, visit You'll be glad you did! Become a supporter of Astronomy Daily by joining our Supporters Club. Commercial free episodes daily are only a click way... Click Here (https://www.spreaker.com/podcast/astronomy-daily-space-news-updates--5648921/support) Episode link: https://play.headliner.app/episode/29192093?utm_source=youtube

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