In this captivating episode of Astronomy Daily, host Anna brings you the latest developments and discoveries from the cosmos. From the bittersweet retirement of Europe's Gaia Space Telescope to groundbreaking observations from the James Webb Space Telescope, this episode is filled with cosmic insights that will spark your curiosity.
Highlights:
- Farewell to Gaia Space Telescope: Join us as we commemorate the end of the Gaia mission, which has mapped nearly 2 billion stars in our galaxy over the past decade. Learn about Gaia's significant contributions to astronomy and the legacy it leaves behind for future generations.
- NASA's Astronaut Reassignments: Discover how NASA is reshaping its astronaut roster by reassigning several crew members from Boeing's troubled Starliner program to SpaceX's Crew 11 mission. This strategic move highlights the ongoing challenges faced by Boeing and the evolving landscape of commercial spaceflight.
- Canceled Cargo Mission to the ISS: Uncover the details surrounding the cancellation of a planned cargo mission to the International Space Station due to damage to the Northrop Grumman Cygnus spacecraft. We discuss the implications for the ISS and NASA's contingency plans.
- China's Ambitious Exploration Roadmap: Explore China's newly unveiled roadmap for deep space exploration, which includes missions to Mars, Jupiter, Venus, and even Neptune. This ambitious plan emphasizes the search for extraterrestrial life and the study of planetary habitability.
- James Webb's Discovery of Auroras on Neptune: Marvel at the James Webb Space Telescope's groundbreaking observation of auroras on Neptune, revealing new insights into the planet's atmosphere and magnetic field. This discovery opens up exciting avenues for research on ice giants and their interactions with solar particles.
For more cosmic updates, visit our website at 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 - Gaia Space Telescope retirement
10:30 - NASA astronaut reassignments
17:00 - Canceled cargo mission to the ISS
22:15 - China's exploration roadmap
27:30 - JWST's auroras on Neptune
✍️ Episode References
Gaia Space Telescope Legacy
[European Space Agency](https://www.esa.int)
NASA Astronaut Assignments
[NASA](https://www.nasa.gov)
Northrop Grumman Cygnus Updates
[Northrop Grumman](https://www.northropgrumman.com)
China's Space Exploration Plans
[China National Space Administration](http://www.cnsa.gov.cn/)
James Webb Space Telescope Findings
[NASA Webb](https://www.nasa.gov/webb)
Astronomy Daily
[Astronomy Daily](http://www.astronomydaily.io/)
Become a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-space-news-updates--5648921/support.
Sponsor Details:
Ensure your online privacy by using NordVPN. To get our special listener deal and save a lot of money, visit www.bitesz.com/nordvpn. 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
00:00:00 --> 00:00:02 Anna: Welcome to Astronomy Daily, where we bring
00:00:02 --> 00:00:04 you the latest news and developments from the
00:00:04 --> 00:00:06 world of space and astronomy. I'm your host
00:00:06 --> 00:00:09 Anna, and we have quite a packed episode for
00:00:09 --> 00:00:11 you today. We'll start with a bittersweet
00:00:11 --> 00:00:14 farewell to Europe's Gaia Space Telescope,
00:00:14 --> 00:00:16 which has mapped nearly 2 billion stars in
00:00:16 --> 00:00:19 our galaxy over the past decade before being
00:00:19 --> 00:00:22 officially retired this week. Then we'll look
00:00:22 --> 00:00:24 at NASA's decision to reassign several
00:00:24 --> 00:00:26 astronauts from Boeing's troubled Starliner
00:00:26 --> 00:00:29 program to SpaceX's Crew 11 mission
00:00:29 --> 00:00:31 as AH Starliner's return to flight gets
00:00:31 --> 00:00:34 pushed forward further into the future. We'll
00:00:34 --> 00:00:36 also cover a canceled cargo mission to the
00:00:36 --> 00:00:39 International Space Station due to spacecraft
00:00:39 --> 00:00:41 damage and dive into China's ambitious new
00:00:41 --> 00:00:44 planetary exploration roadmap that stretches
00:00:44 --> 00:00:47 all the way to Neptune. And finally, we'll
00:00:47 --> 00:00:49 explore a fascinating discovery from the
00:00:49 --> 00:00:52 James Webb Space Telescope, the first ever
00:00:52 --> 00:00:54 observation of auroras on the ice giant
00:00:54 --> 00:00:57 Neptune, revealing unexpected details about
00:00:57 --> 00:00:59 the distant planet's atmosphere and magnetic
00:00:59 --> 00:01:01 field. So buckle up for a journey across our
00:01:01 --> 00:01:04 solar system and beyond as we expl the latest
00:01:04 --> 00:01:06 frontiers in space science and exploration.
00:01:07 --> 00:01:10 Europe's Star Mapping Gaia Space Observatory
00:01:10 --> 00:01:12 has officially ended its mission after more
00:01:12 --> 00:01:14 than a decade of groundbreaking observations.
00:01:15 --> 00:01:17 On March 27, the European Space
00:01:17 --> 00:01:20 Agency's control team in Paris shut down
00:01:20 --> 00:01:22 Gaia's subsystems and maneuvered the
00:01:22 --> 00:01:25 spacecraft into a safe retirement orbit
00:01:25 --> 00:01:28 around the sun. The move came after ESA
00:01:28 --> 00:01:29 had already shut down Gaia's science
00:01:29 --> 00:01:32 operations in January, when the spacecraft's
00:01:32 --> 00:01:35 fuel reserves were nearly depleted. The final
00:01:35 --> 00:01:37 retirement orbit was carefully calculated to
00:01:37 --> 00:01:39 ensure Gaia remains at least 6.2 million
00:01:39 --> 00:01:42 miles away from Earth for the next century.
00:01:42 --> 00:01:44 Despite its active mission coming to an end,
00:01:44 --> 00:01:47 Gaia's scientific impact will continue to
00:01:47 --> 00:01:49 unfold for generations. As Gaia mission
00:01:49 --> 00:01:52 manager Uwe Lammers eloquently put it, we
00:01:52 --> 00:01:54 will never forget Gaia and Gaia will never
00:01:55 --> 00:01:57 forget us. Since its launch in
00:01:57 --> 00:01:59 2013, Gaia has charted the positions of
00:01:59 --> 00:02:02 nearly 2 billion stars, creating the most
00:02:02 --> 00:02:04 precise three dimensional map of our Milky
00:02:04 --> 00:02:07 Way galaxy ever made. Its contributions
00:02:07 --> 00:02:10 to astronomy have been immense, from
00:02:10 --> 00:02:12 discovering evidence of galactic mergers to
00:02:12 --> 00:02:15 identifying new star clusters, tracking
00:02:15 --> 00:02:17 hundreds of thousands of asteroids and
00:02:17 --> 00:02:19 comets, and even helping scientists discover
00:02:19 --> 00:02:22 exoplanets and black holes. The team
00:02:22 --> 00:02:24 releases large batches of mission data every
00:02:24 --> 00:02:27 couple of years, with the next major release
00:02:27 --> 00:02:30 data, release four planned for 2026.
00:02:30 --> 00:02:32 Even more exciting, the final Gaia Legacy
00:02:32 --> 00:02:34 catalogs are scheduled for release around
00:02:34 --> 00:02:37 2030, ensuring that Gaia's contributions will
00:02:37 --> 00:02:39 continue shaping our understanding of the
00:02:39 --> 00:02:41 cosmos for decades to come.
00:02:41 --> 00:02:43 Decommissioning such a sophisticated
00:02:43 --> 00:02:46 spacecraft wasn't a simple task. Spacecraft
00:02:46 --> 00:02:49 operations engineer Giulia Fortuno described
00:02:49 --> 00:02:51 the mixed emotions involved. I have mixed
00:02:51 --> 00:02:53 feelings between the excitement for these
00:02:53 --> 00:02:55 important end of life operations and the
00:02:55 --> 00:02:58 sadness of saying goodbye to a spacecraft I
00:02:58 --> 00:03:01 have worked on for more than five years. The
00:03:01 --> 00:03:03 Gaia team had to systematically dismantle the
00:03:03 --> 00:03:05 spacecraft's built in redundancies
00:03:06 --> 00:03:08 features designed to help it survive extreme
00:03:08 --> 00:03:10 conditions like radiation storms and
00:03:10 --> 00:03:13 micrometeorite impacts. This meticulous
00:03:13 --> 00:03:15 process ensures that Gaia won't accidentally
00:03:15 --> 00:03:17 reactivate if its solar panels catch sunlight
00:03:17 --> 00:03:20 in the future. As this remarkable mission
00:03:20 --> 00:03:22 comes to a close, the astronomical community
00:03:23 --> 00:03:25 celebrates Gaia's legacy as what project
00:03:25 --> 00:03:27 scientist Johannes Salman called a unique
00:03:27 --> 00:03:30 treasure trove for astrophysical research
00:03:30 --> 00:03:32 that will influence almost all disciplines in
00:03:32 --> 00:03:34 astronomy for generations to come.
00:03:35 --> 00:03:37 Next up in today's news, NASA has made
00:03:37 --> 00:03:39 significant changes to its astronaut
00:03:39 --> 00:03:41 assignments, announcing Thursday evening that
00:03:41 --> 00:03:43 several astronauts previously slated for
00:03:43 --> 00:03:46 Boeing's Starliner missions will now fly on
00:03:46 --> 00:03:48 SpaceX's Crew 11 mission to the International
00:03:48 --> 00:03:51 Space Station. Leading the Crew 11 flight,
00:03:51 --> 00:03:54 now scheduled for no earlier than July 2025,
00:03:54 --> 00:03:57 will be NASA astronaut Zena Cardman. She'll
00:03:57 --> 00:03:59 be joined by NASA astronaut Mike Finke as
00:03:59 --> 00:04:02 pilot, along with JAXA astronaut Kimi Ayui
00:04:02 --> 00:04:04 and Roscosmos cosmonaut Oleg Platonov as
00:04:04 --> 00:04:07 mission specialists. These four astronauts
00:04:07 --> 00:04:09 will have the honor of being aboard the space
00:04:09 --> 00:04:11 station during the 25th anniversary of
00:04:11 --> 00:04:13 continuous human presence on the orbiting
00:04:13 --> 00:04:16 laboratory, which began when Expedition 1
00:04:16 --> 00:04:19 docked on November 2, 2000. This
00:04:19 --> 00:04:21 reassignment represents yet another setback
00:04:21 --> 00:04:23 for Boeing's troubled Starliner program.
00:04:24 --> 00:04:26 Cardman was previously assigned as Commander
00:04:26 --> 00:04:29 of the Crew 9 mission before being removed
00:04:29 --> 00:04:31 from the Starliner crew flight test mission
00:04:31 --> 00:04:34 last August, when NASA decided the spacecraft
00:04:34 --> 00:04:36 would return to Earth without crew. Mike
00:04:36 --> 00:04:38 Finke's journey has been particularly
00:04:38 --> 00:04:41 complicated. Originally named to the
00:04:41 --> 00:04:43 Starliner crew flight test back in
00:04:43 --> 00:04:46 2018, he was later designated as part of the
00:04:46 --> 00:04:49 cadre of Starliner astronauts and then moved
00:04:49 --> 00:04:51 to the Starliner 1 mission as pilot in
00:04:51 --> 00:04:54 2022. Now he finds himself
00:04:54 --> 00:04:57 reassigned to SpaceX's Dragon spacecraft.
00:04:57 --> 00:05:00 JAXA UH astronaut Kimi Ayui, who had been
00:05:00 --> 00:05:02 training with the Starliner team and was
00:05:02 --> 00:05:04 likely intended for a Starliner mission, has
00:05:04 --> 00:05:06 also been shifted to the Crew 11 roster.
00:05:07 --> 00:05:09 Meanwhile, Boeing and NASA continue working
00:05:09 --> 00:05:11 through technical challenges with the
00:05:11 --> 00:05:14 Starliner spacecraft. According to NASA, more
00:05:14 --> 00:05:17 than 70% of the flight observations and in
00:05:17 --> 00:05:19 flight anomalies from last summer's test
00:05:19 --> 00:05:21 mission have been addressed. But the
00:05:21 --> 00:05:24 major in flight propulsion system anomalies
00:05:24 --> 00:05:26 remain outstanding issues that likely won't
00:05:26 --> 00:05:28 be resolved until further into
00:05:28 --> 00:05:31 2025. A new testing campaign is
00:05:31 --> 00:05:32 planned for this spring and summer at the
00:05:32 --> 00:05:35 White Sands Test Facility in New Mexico,
00:05:35 --> 00:05:36 focusing on the propulsion issues that
00:05:37 --> 00:05:39 prompted NASA's decision to return the
00:05:39 --> 00:05:41 Starliner without astronauts.
00:05:41 --> 00:05:44 Engineers will conduct integrated firing of
00:05:44 --> 00:05:46 key Starliner thrusters within a UH service
00:05:46 --> 00:05:49 module doghouse to validate thermal
00:05:49 --> 00:05:51 models and develop potential upgrades for the
00:05:51 --> 00:05:54 propulsion and thermal protection systems.
00:05:54 --> 00:05:57 NASA is weighing its options for Starliner's
00:05:57 --> 00:05:59 next flight while still planning for a crew
00:05:59 --> 00:06:01 capable post certification mission. The
00:06:01 --> 00:06:03 agency is also considering a cargo only
00:06:03 --> 00:06:06 option depending on its needs. Steve Stitch,
00:06:06 --> 00:06:08 manager of NASA's Commercial Crew Program,
00:06:08 --> 00:06:10 indicated the next Starliner flight would
00:06:10 --> 00:06:12 likely occur in late 2025 or early
00:06:12 --> 00:06:15 2026. These developments represent
00:06:15 --> 00:06:17 a uh continued shift in NASA's commercial
00:06:17 --> 00:06:20 crew strategy, with SpaceX's Dragon
00:06:20 --> 00:06:22 spacecraft taking on additional missions
00:06:22 --> 00:06:25 while Boeing works to resolve Starliner's
00:06:25 --> 00:06:26 technical challenges.
00:06:27 --> 00:06:30 And in more NASA news, In a disappointing
00:06:30 --> 00:06:32 turn of events for NASA's cargo resupply
00:06:32 --> 00:06:35 schedule, the space agency has called off a
00:06:35 --> 00:06:37 planned mission to the International Space
00:06:37 --> 00:06:39 Station due to damage discovered on the
00:06:39 --> 00:06:42 Northrop Grumman Cygnus spacecraft.
00:06:42 --> 00:06:45 The mission, designated NG22,
00:06:45 --> 00:06:47 was scheduled to launch this June from
00:06:47 --> 00:06:50 Florida's Space coast, carrying several tons
00:06:50 --> 00:06:52 of critical supplies, including food,
00:06:53 --> 00:06:55 fuel and scientific equipment to the orbiting
00:06:55 --> 00:06:58 laboratory. The problems began on March
00:06:58 --> 00:07:01 5th when NASA announced that the spacecraft's
00:07:01 --> 00:07:03 shipping container had sustained damage
00:07:03 --> 00:07:06 during transportation to the launch site. At
00:07:06 --> 00:07:08 that time, mission teams were hopeful that
00:07:08 --> 00:07:10 the Cygnus spacecraft itself might have
00:07:10 --> 00:07:13 remained intact despite the damage to its
00:07:13 --> 00:07:16 container. However, after completing
00:07:16 --> 00:07:18 a thorough inspection, NASA confirmed on
00:07:18 --> 00:07:21 Wednesday that the cargo module itself had
00:07:21 --> 00:07:24 also been damaged following initial
00:07:24 --> 00:07:26 evaluation. There also is damage to the cargo
00:07:26 --> 00:07:29 module, NASA officials stated in an emailed
00:07:29 --> 00:07:30 announcement, leading to the difficult
00:07:31 --> 00:07:33 decision to cancel the June flight entirely.
00:07:34 --> 00:07:36 The good news is that this cancellation isn't
00:07:36 --> 00:07:38 expected to significantly impact the
00:07:38 --> 00:07:41 astronauts aboard the space station. NASA had
00:07:41 --> 00:07:43 already taken precautionary measures by
00:07:43 --> 00:07:44 planning to send additional food and other
00:07:45 --> 00:07:47 consumables on SpaceX's next cargo flight,
00:07:47 --> 00:07:50 which is scheduled to launch next month.
00:07:50 --> 00:07:52 Northrop Grumman and NASA aren't giving up on
00:07:52 --> 00:07:55 this particular Cygnus spacecraft just yet.
00:07:55 --> 00:07:57 According to NASA's statement, the
00:07:57 --> 00:07:59 international Space Station program will
00:07:59 --> 00:08:01 continue working with Northrop Grumman to
00:08:01 --> 00:08:03 assess whether the Cygnus cargo module is
00:08:03 --> 00:08:05 able to safely fly to the space station on a
00:08:05 --> 00:08:08 future flight. In the meantime, Northrop
00:08:08 --> 00:08:11 Grumman is already shifting focus to its next
00:08:11 --> 00:08:13 mission with NG23 now scheduled to
00:08:13 --> 00:08:16 launch no earlier than this fall. The current
00:08:16 --> 00:08:19 Cygnus spacecraft, NG21, remains
00:08:19 --> 00:08:22 berthed at the ISS but is scheduled to depart
00:08:22 --> 00:08:25 tomorrow. Unlike SpaceX's Dragon
00:08:25 --> 00:08:27 capsules, which are designed to survive
00:08:27 --> 00:08:29 reentry and be recovered after splashing down
00:08:29 --> 00:08:32 in the ocean, Cygnus spacecraft are
00:08:32 --> 00:08:35 expendable. At the end of their missions,
00:08:35 --> 00:08:37 they're loaded with trash and other unneeded
00:08:37 --> 00:08:39 items from the station before being released
00:08:39 --> 00:08:41 to burn up during reentry into Earth's
00:08:41 --> 00:08:44 atmosphere. China has unveiled
00:08:44 --> 00:08:46 an ambitious new roadmap for deep space
00:08:47 --> 00:08:49 exploration that places a strong emphasis on
00:08:49 --> 00:08:51 the search for extraterrestrial life and
00:08:52 --> 00:08:54 studying planetary habitability. This
00:08:54 --> 00:08:56 strategy, recently shared by the country's
00:08:56 --> 00:08:59 Deep Space Exploration Laboratory, outlines
00:08:59 --> 00:09:02 a series of missions spanning from 2028
00:09:02 --> 00:09:05 to 2039 that will take Chinese
00:09:05 --> 00:09:08 spacecraft across our solar system. The
00:09:08 --> 00:09:11 journey begins with the Tianwen 3 Mars Sample
00:09:11 --> 00:09:13 Return Mission, scheduled for launch around
00:09:13 --> 00:09:16 late 2028. This already approved
00:09:16 --> 00:09:18 mission aims to collect samples from the
00:09:18 --> 00:09:20 Martian surface and return them to Earth,
00:09:20 --> 00:09:23 with one of its primary objectives being to
00:09:23 --> 00:09:25 investigate potential traces of past or
00:09:25 --> 00:09:28 present life on the Red planet. Hot on its
00:09:28 --> 00:09:30 heels will be Tianwen 4, planned for
00:09:30 --> 00:09:32 2029, which will venture to the Jupiter
00:09:32 --> 00:09:34 system and eventually enter orbit around
00:09:34 --> 00:09:37 Callisto, one of Jupiter's largest moons.
00:09:37 --> 00:09:39 This mission could yield valuable insights
00:09:39 --> 00:09:41 about potential ocean worlds and habitability
00:09:42 --> 00:09:44 conditions in the outer Solar system. Around
00:09:44 --> 00:09:47 2030, China plans to build a UH ground
00:09:47 --> 00:09:49 simulation device for planetary habitable
00:09:49 --> 00:09:52 environments, allowing scientists to
00:09:52 --> 00:09:54 recreate and study conditions that might
00:09:54 --> 00:09:57 support life elsewhere in our solar system.
00:09:57 --> 00:10:00 Perhaps one of the most intriguing missions
00:10:00 --> 00:10:02 on the roadmap is scheduled for 2033.
00:10:03 --> 00:10:05 A UH spacecraft designed to collect particles
00:10:05 --> 00:10:07 from Venus's atmosphere and return them to
00:10:07 --> 00:10:10 Earth. This mission could help scientists
00:10:10 --> 00:10:12 better understand the microenvironment of
00:10:12 --> 00:10:15 Venus, a planet that might once have been
00:10:15 --> 00:10:17 much more habitable than it is today. By
00:10:17 --> 00:10:20 2038, China aims to establish a Mars
00:10:20 --> 00:10:23 Research Station focused on in situ
00:10:23 --> 00:10:26 resource utilization and conducting long term
00:10:26 --> 00:10:29 environmental and biological research. While
00:10:29 --> 00:10:31 there's no indication this facility will host
00:10:31 --> 00:10:33 human crew initially, it represents a
00:10:33 --> 00:10:36 significant step in China's long term Mars
00:10:36 --> 00:10:38 exploration strategy. The most distant
00:10:38 --> 00:10:41 target in the roadmap is Neptune, with a
00:10:41 --> 00:10:43 potential nuclear powered mission launching
00:10:43 --> 00:10:46 around 2039. This ambitious mission
00:10:46 --> 00:10:48 would study the ice giant's ring system
00:10:48 --> 00:10:50 atmosphere and its fascinating moon
00:10:50 --> 00:10:53 Triton, exploring the habitability of the
00:10:53 --> 00:10:55 Neptunian system and searching for other
00:10:55 --> 00:10:58 potential ocean worlds. While some of these
00:10:58 --> 00:10:59 missions are already approved and in
00:11:00 --> 00:11:02 development, others face significant
00:11:02 --> 00:11:04 technological and economic hurdles. For
00:11:04 --> 00:11:07 example, a UH mission to Neptune would
00:11:07 --> 00:11:09 require China to make considerable advances
00:11:09 --> 00:11:11 in nuclear power for deep space applications,
00:11:12 --> 00:11:14 ultra long distance communications and
00:11:14 --> 00:11:16 spacecraft designed for extended mission
00:11:16 --> 00:11:19 lifetimes. This roadmap demonstrates
00:11:19 --> 00:11:21 China's growing ambitions in space
00:11:21 --> 00:11:23 exploration and particularly in
00:11:23 --> 00:11:26 astrobiology. Combined with China's Earth
00:11:26 --> 00:11:28 2.0 inches Exoplanet Observatory
00:11:28 --> 00:11:31 scheduled for launch in 2028, which aims
00:11:31 --> 00:11:33 to detect Earth like planets around other
00:11:33 --> 00:11:36 stars, it's clear that the search for
00:11:36 --> 00:11:38 potentially habitable worlds and signs of
00:11:38 --> 00:11:40 life beyond Earth has become a central focus
00:11:40 --> 00:11:42 of China's space program.
00:11:43 --> 00:11:46 Lets pay the JWST a UH visit now.
00:11:46 --> 00:11:48 In a remarkable astronomical breakthrough,
00:11:48 --> 00:11:51 the James Webb Space Telescope has captured
00:11:51 --> 00:11:54 the first ever clear images of auroras on
00:11:54 --> 00:11:56 Neptune. This significant discovery has
00:11:56 --> 00:11:59 eluded scientists for decades as previous
00:11:59 --> 00:12:02 instruments aboard NASA's Voyager 2 probe and
00:12:02 --> 00:12:04 even the Hubble Space Telescope weren't able
00:12:04 --> 00:12:06 to definitively observe this elusive
00:12:06 --> 00:12:08 phenomenon. On our solar system's most
00:12:08 --> 00:12:11 distant planet, the auroras appear as
00:12:11 --> 00:12:13 lighter blue or cayenne areas against
00:12:13 --> 00:12:16 Neptune's deep blue atmosphere. Unlike
00:12:16 --> 00:12:18 Earth's auroras, which are concentrated
00:12:18 --> 00:12:21 around our magnetic poles, Neptune's auroral
00:12:21 --> 00:12:23 activity occurs at mid latitudes, roughly
00:12:23 --> 00:12:25 equivalent to where South America would be
00:12:25 --> 00:12:27 positioned on our planet. This unique
00:12:27 --> 00:12:30 distribution is due to Neptune's unusual
00:12:30 --> 00:12:32 magnetic field, which is tilted by a
00:12:32 --> 00:12:35 remarkable 47 degrees from the planet's
00:12:35 --> 00:12:37 rotation axis. What makes this
00:12:37 --> 00:12:39 discovery particularly exciting is that it
00:12:39 --> 00:12:41 required Webb's exceptional infrared
00:12:41 --> 00:12:44 sensitivity to detect. Henrik
00:12:44 --> 00:12:46 Mellon of Northumbria University, who led the
00:12:46 --> 00:12:48 research while at the University of
00:12:48 --> 00:12:50 Leicester, expressed his astonishment at the
00:12:50 --> 00:12:52 clarity of the images, noting that the detail
00:12:52 --> 00:12:54 and definition of the auroral signature was
00:12:54 --> 00:12:57 truly shocking. The basic mechanism behind
00:12:57 --> 00:13:00 Neptune's auroras is similar to Earth's
00:13:00 --> 00:13:03 northern and southern lights solar particles
00:13:03 --> 00:13:06 interacting with the planet's atmosphere. But
00:13:06 --> 00:13:08 the configuration and conditions are
00:13:08 --> 00:13:10 distinctly different. The location of
00:13:10 --> 00:13:13 Neptune's auroral glow directly correlates
00:13:13 --> 00:13:15 to where the planet's magnetic fields
00:13:15 --> 00:13:18 converge into its atmosphere, explaining why
00:13:18 --> 00:13:20 they appear far from its rotational poles.
00:13:20 --> 00:13:23 Perhaps equally surprising was what Webb's
00:13:23 --> 00:13:25 data revealed about Neptune's atmospheric
00:13:25 --> 00:13:28 temperature. For the first time since
00:13:28 --> 00:13:30 Voyager 2's 1989 flyby,
00:13:31 --> 00:13:32 scientists were able to measure the
00:13:32 --> 00:13:34 temperature at the top of Neptune's
00:13:34 --> 00:13:36 atmosphere, discovering it has cooled
00:13:36 --> 00:13:39 dramatically by several hundred degrees.
00:13:39 --> 00:13:42 In fact, the temperature recorded in 2023
00:13:42 --> 00:13:45 was just over half of what it was in 1989,
00:13:45 --> 00:13:47 which may explain why these auroras have gone
00:13:47 --> 00:13:50 undetected until now. This discovery opens an
00:13:50 --> 00:13:53 entirely new field of study regarding ice
00:13:53 --> 00:13:55 giant planets and how solar particles
00:13:55 --> 00:13:58 interact with their atmospheres, providing
00:13:58 --> 00:14:00 astronomers with fresh insights into these
00:14:00 --> 00:14:01 mysterious distant worlds.
00:14:03 --> 00:14:05 Well, that brings us to the end of another
00:14:05 --> 00:14:08 fascinating journey through the cosmos. From
00:14:08 --> 00:14:10 the final retirement of Europe's Gaia
00:14:10 --> 00:14:12 telescope after its remarkable decade mapping
00:14:12 --> 00:14:15 our galaxy, to the ongoing challenges with
00:14:15 --> 00:14:17 Boeing's Starliner prompting NASA to reassign
00:14:17 --> 00:14:20 astronauts to SpaceX missions, we've covered
00:14:20 --> 00:14:23 quite the astronomical landscape today. We've
00:14:23 --> 00:14:25 seen how even the best laid plans can change
00:14:25 --> 00:14:28 when hardware gets damaged, as with Northrop
00:14:28 --> 00:14:31 Grumman's Cygnus spacecraft. We've explored
00:14:31 --> 00:14:33 China's ambitious roadmap for planetary
00:14:33 --> 00:14:35 exploration, with its focus on finding
00:14:35 --> 00:14:38 habitable environments and possibly life
00:14:38 --> 00:14:41 beyond Earth. And we've marveled at the James
00:14:41 --> 00:14:43 Webb Space Telescope's groundbreaking
00:14:43 --> 00:14:45 discovery of Neptune's auroras. Hiding in
00:14:45 --> 00:14:48 plain sight for decades until now, the
00:14:48 --> 00:14:51 universe continues to surprise and inspire us
00:14:51 --> 00:14:53 with each new discovery and mission. Whether
00:14:53 --> 00:14:55 it's mapping billions of stars or detecting
00:14:55 --> 00:14:58 the faint glow of auroras on distant ice
00:14:58 --> 00:15:00 giants, our quest to understand the cosmos
00:15:00 --> 00:15:02 keeps pushing forward despite setbacks and
00:15:02 --> 00:15:05 challenges. I'm Anna, and it's been my
00:15:05 --> 00:15:07 pleasure to guide you through today's space
00:15:07 --> 00:15:09 news. If you'd like to stay updated on all
00:15:09 --> 00:15:11 things astronomy, please visit our
00:15:11 --> 00:15:14 website@astronomydaily.IO where you can
00:15:14 --> 00:15:16 find our constantly updating news feed and
00:15:16 --> 00:15:18 listen to all our episodes anytime. For more
00:15:18 --> 00:15:21 astronomical content and updates, you can
00:15:21 --> 00:15:24 also find us across social media. Just search
00:15:24 --> 00:15:26 for Astro Daily Pod on X, Facebook,
00:15:27 --> 00:15:29 YouTubeMusic, YouTubeMusic Music and TikTok.
00:15:29 --> 00:15:31 Until next time, keep looking up and
00:15:31 --> 00:15:33 wondering about the mysteries that await us
00:15:33 --> 00:15:35 among the stars. See you tomorrow.
00:15:41 --> 00:15:41 The world.