00:00:00 --> 00:00:00 [Music]
00:00:00 --> 00:00:02 Welcome to Astronomy Daily, your daily
00:00:02 --> 00:00:04 dose of everything happening beyond our
00:00:04 --> 00:00:07 atmosphere. I'm Anna and I'm thrilled to
00:00:07 --> 00:00:09 have you join me for today's cosmic
00:00:09 --> 00:00:11 journey through the latest developments
00:00:11 --> 00:00:13 in space exploration and astronomical
00:00:13 --> 00:00:15 research. We've got a packed episode for
00:00:15 --> 00:00:17 you today with some fascinating stories
00:00:17 --> 00:00:19 spanning from our nearest celestial
00:00:19 --> 00:00:20 neighbor all the way to the ultimate
00:00:20 --> 00:00:23 fate of the universe itself. First up,
00:00:23 --> 00:00:25 we'll dive into what exactly caused
00:00:25 --> 00:00:27 Intuitive Machine second lunar lander to
00:00:27 --> 00:00:29 topple over when it touched down on the
00:00:29 --> 00:00:32 moon in March. The company has
00:00:32 --> 00:00:33 identified several factors that
00:00:33 --> 00:00:35 contributed to this unexpected landing
00:00:35 --> 00:00:37 position, including some interesting
00:00:37 --> 00:00:39 challenges with their laser altimeters
00:00:39 --> 00:00:41 and the tricky lighting conditions near
00:00:41 --> 00:00:43 the lunar south pole. We'll explore how
00:00:44 --> 00:00:45 they're planning to address these issues
00:00:45 --> 00:00:47 for future missions.
00:00:47 --> 00:00:49 Then we'll look at how Intuitive
00:00:49 --> 00:00:51 Machines is diversifying beyond just
00:00:51 --> 00:00:54 lunar landers, especially as NASA's
00:00:54 --> 00:00:56 Aremis program faces potential major
00:00:56 --> 00:00:59 changes under new budget proposals. It's
00:00:59 --> 00:01:01 a fascinating look at how commercial
00:01:01 --> 00:01:03 space companies adapt to shifting
00:01:03 --> 00:01:04 priorities in space
00:01:04 --> 00:01:07 exploration. Next, we have some
00:01:07 --> 00:01:09 mindbending research about the ultimate
00:01:09 --> 00:01:11 end of the universe. Scientists from
00:01:11 --> 00:01:13 Radbood University have revised their
00:01:13 --> 00:01:15 predictions about when and how the
00:01:15 --> 00:01:17 cosmos might meet its final demise.
00:01:17 --> 00:01:19 Spoiler alert, it's still an
00:01:19 --> 00:01:21 incomprehensibly long time away, but
00:01:21 --> 00:01:23 apparently sooner than previously
00:01:23 --> 00:01:25 thought. We'll break down what this
00:01:25 --> 00:01:26 means and the science of Hawking
00:01:26 --> 00:01:28 radiation that's driving these new
00:01:28 --> 00:01:30 calculations. We'll also check in with
00:01:30 --> 00:01:32 the crew aboard the International Space
00:01:32 --> 00:01:35 Station where the Expedition 73 team has
00:01:35 --> 00:01:38 been busy with biotechnology experiments
00:01:38 --> 00:01:40 and important research on how fire
00:01:40 --> 00:01:42 behaves in microgravity. Their findings
00:01:42 --> 00:01:44 could have significant implications for
00:01:44 --> 00:01:47 fire safety both in space and here on
00:01:47 --> 00:01:49 Earth. Then we'll mark a historic
00:01:49 --> 00:01:51 milestone in satellite navigation as the
00:01:51 --> 00:01:53 European Space Agency bids farewell to
00:01:53 --> 00:01:56 its first ever decommissioned Galileo
00:01:56 --> 00:01:58 satellite after 12 years of service.
00:01:58 --> 00:02:00 It's a reminder that responsible space
00:02:00 --> 00:02:02 operations include not just launching
00:02:02 --> 00:02:04 new technology, but properly retiring
00:02:04 --> 00:02:07 old satellites as well. And finally,
00:02:07 --> 00:02:09 we'll explore fascinating new research,
00:02:09 --> 00:02:11 suggesting that life on Earth may have
00:02:11 --> 00:02:13 emerged remarkably quickly after our
00:02:13 --> 00:02:16 planet formed. This study provides the
00:02:16 --> 00:02:17 strongest evidence yet that the process
00:02:17 --> 00:02:20 of abiogenesis, the development of life
00:02:20 --> 00:02:22 from non-living matter, might be a
00:02:22 --> 00:02:23 relatively rapid phenomenon under
00:02:24 --> 00:02:26 Earthlike conditions. The implications
00:02:26 --> 00:02:28 for the search for life elsewhere are
00:02:28 --> 00:02:30 profound. So, buckle up for a journey
00:02:30 --> 00:02:32 across the cosmos as we explore these
00:02:32 --> 00:02:35 stories and more on today's episode of
00:02:35 --> 00:02:36 Astronomy
00:02:36 --> 00:02:39 Daily. In what has become a cautionary
00:02:39 --> 00:02:40 tale about the challenges of lunar
00:02:40 --> 00:02:43 landings, Intuitive Machines has now
00:02:43 --> 00:02:45 revealed exactly what caused their Nova
00:02:45 --> 00:02:47 Sea lander to fall on its side during
00:02:47 --> 00:02:49 its touchdown in the moon's south pole
00:02:49 --> 00:02:52 region this past March. The company
00:02:52 --> 00:02:54 executives disclosed three key factors
00:02:54 --> 00:02:56 during a May earnings call that
00:02:56 --> 00:02:58 contributed to what they diplomatically
00:02:58 --> 00:03:01 termed a landing anomaly. First, and
00:03:01 --> 00:03:03 perhaps most significant, were issues
00:03:03 --> 00:03:06 with the lander's laser alimters.
00:03:06 --> 00:03:08 According to CEO Steve Alimus, these
00:03:08 --> 00:03:10 crucial instruments experienced signal
00:03:10 --> 00:03:12 noise and distortion during the final
00:03:12 --> 00:03:14 descent phase. This interference
00:03:14 --> 00:03:16 prevented the altimeters from providing
00:03:16 --> 00:03:18 accurate altitude readings. Essentially,
00:03:18 --> 00:03:19 the spacecraft couldn't properly
00:03:20 --> 00:03:21 determine how far it was from the lunar
00:03:21 --> 00:03:24 surface as it approached touchdown. The
00:03:24 --> 00:03:26 second factor involves the unique
00:03:26 --> 00:03:28 lighting conditions at the moon's south
00:03:28 --> 00:03:31 pole. Unlike equatorial regions, the
00:03:31 --> 00:03:33 south pole experiences extremely low sun
00:03:34 --> 00:03:36 angles, creating dramatic elongated
00:03:36 --> 00:03:38 shadows across the lunar landscape.
00:03:38 --> 00:03:41 These shadows severely challenged the
00:03:41 --> 00:03:43 precision capabilities of the lander's
00:03:43 --> 00:03:46 navigation systems, which rely partly on
00:03:46 --> 00:03:49 visual references to guide the descent.
00:03:49 --> 00:03:51 Connected to this lighting issue was a
00:03:51 --> 00:03:52 third problem involving crater
00:03:52 --> 00:03:54 recognition. The unusual lighting
00:03:54 --> 00:03:56 conditions made craters appear
00:03:56 --> 00:03:58 differently at lower altitudes than they
00:03:58 --> 00:04:00 did in the reference images from NASA's
00:04:00 --> 00:04:03 Lunar Reconnaissance Orbiter. This
00:04:03 --> 00:04:05 discrepancy confused the lander's
00:04:05 --> 00:04:07 optical navigation system, further
00:04:07 --> 00:04:09 complicating its ability to execute a
00:04:09 --> 00:04:12 proper landing. The combined effect of
00:04:12 --> 00:04:14 these issues resulted in the Nova C
00:04:14 --> 00:04:16 lander tipping over upon touchdown,
00:04:16 --> 00:04:19 falling onto its side within a crater.
00:04:19 --> 00:04:21 This unfortunate position prevented the
00:04:21 --> 00:04:22 spacecraft's solar panels from
00:04:22 --> 00:04:24 generating sufficient power,
00:04:24 --> 00:04:26 dramatically shortening its mission to
00:04:26 --> 00:04:29 barely 12 hours after landing, far less
00:04:29 --> 00:04:31 than planned. Despite the setback,
00:04:31 --> 00:04:33 Intuitive Machines is already
00:04:33 --> 00:04:35 implementing changes for their next
00:04:35 --> 00:04:37 lunar mission, IM3, scheduled for launch
00:04:38 --> 00:04:40 next year. Altimus outlined several
00:04:40 --> 00:04:42 specific improvements, including the
00:04:42 --> 00:04:44 addition of dissimilar and redundant
00:04:44 --> 00:04:46 altimeters to provide backup
00:04:46 --> 00:04:49 measurements if one system fails. These
00:04:49 --> 00:04:51 systems will also undergo more rigorous
00:04:51 --> 00:04:52 flight-like testing before launch to
00:04:52 --> 00:04:55 better simulate actual lunar conditions.
00:04:55 --> 00:04:57 The company is also developing a new
00:04:57 --> 00:05:00 lighting independent sensor specifically
00:05:00 --> 00:05:02 designed to measure surface velocity
00:05:02 --> 00:05:04 regardless of shadows or lighting
00:05:04 --> 00:05:06 angles. Additionally, they're enhancing
00:05:06 --> 00:05:08 their crater database to improve the
00:05:08 --> 00:05:11 optical navigation systems ability to
00:05:11 --> 00:05:13 recognize lunar features under various
00:05:13 --> 00:05:15 lighting conditions.
00:05:15 --> 00:05:17 Interestingly, these modifications won't
00:05:17 --> 00:05:20 delay the IM3 mission. Though Altimus
00:05:20 --> 00:05:22 acknowledged there would be a slight
00:05:22 --> 00:05:24 increase in costs due to the additional
00:05:24 --> 00:05:27 sensors, he didn't specify exactly how
00:05:27 --> 00:05:29 much more expensive the mission would
00:05:29 --> 00:05:32 become. Meanwhile, Intuitive Machines
00:05:32 --> 00:05:34 remains in negotiations with NASA and
00:05:34 --> 00:05:36 other customers about up to dollar4
00:05:36 --> 00:05:38 million in success payments related to
00:05:38 --> 00:05:42 the IM2 mission. Despite the lander
00:05:42 --> 00:05:44 falling over, some payloads did manage
00:05:44 --> 00:05:47 to conduct limited tests. For example, a
00:05:48 --> 00:05:50 NASA drill was able to test its
00:05:50 --> 00:05:52 mechanisms, although it couldn't perform
00:05:52 --> 00:05:54 its primary objective of drilling into
00:05:54 --> 00:05:57 the lunar surface as planned. This
00:05:57 --> 00:05:59 incident highlights the extraordinary
00:05:59 --> 00:06:02 difficulties involved in lunar landings,
00:06:02 --> 00:06:04 particularly in the challenging south
00:06:04 --> 00:06:06 polear region where NASA and other space
00:06:06 --> 00:06:09 agencies hope to establish a long-term
00:06:09 --> 00:06:11 human presence. The extreme lighting
00:06:11 --> 00:06:13 conditions combined with the complex
00:06:13 --> 00:06:15 terrain featuring numerous craters and
00:06:15 --> 00:06:17 shadows create a particularly demanding
00:06:18 --> 00:06:19 environment for precision
00:06:19 --> 00:06:21 landings. The lessons learned from this
00:06:21 --> 00:06:23 mission will undoubtedly inform not just
00:06:23 --> 00:06:26 intuitive machines future attempts, but
00:06:26 --> 00:06:27 also the broader commercial lunar
00:06:27 --> 00:06:30 industry as it supports NASA's Aremis
00:06:30 --> 00:06:32 program and other initiatives aimed at
00:06:32 --> 00:06:34 returning humans to the lunar surface in
00:06:34 --> 00:06:36 the coming years. Beyond their lunar
00:06:36 --> 00:06:39 landing setbacks, Intuitive Machines is
00:06:39 --> 00:06:41 actively working to diversify their
00:06:41 --> 00:06:43 space business portfolio. During their
00:06:43 --> 00:06:46 recent earnings call, CEO Steve Alimus
00:06:46 --> 00:06:48 emphasized the company's efforts to
00:06:48 --> 00:06:50 expand beyond their core lunar lander
00:06:50 --> 00:06:52 technology into other promising space
00:06:52 --> 00:06:55 sectors. One notable project involves
00:06:55 --> 00:06:57 the design of an orbital transfer
00:06:57 --> 00:06:59 vehicle based on their Nova Sea lander
00:06:59 --> 00:07:01 architecture. This work is being
00:07:01 --> 00:07:03 conducted with an unnamed government
00:07:03 --> 00:07:05 customer and leverages the company's
00:07:05 --> 00:07:08 existing expertise in spacecraft design
00:07:08 --> 00:07:10 while opening new market opportunities
00:07:10 --> 00:07:11 in orbital
00:07:11 --> 00:07:13 logistics. Intuitive Machines is also
00:07:14 --> 00:07:15 collaborating with the Air Force
00:07:15 --> 00:07:17 Research Laboratory on the ambitious
00:07:17 --> 00:07:20 Jetson project. This initiative aims to
00:07:20 --> 00:07:23 develop a spacecraft utilizing nuclear
00:07:23 --> 00:07:25 electric propulsion, a potentially
00:07:25 --> 00:07:26 revolutionary technology that could
00:07:26 --> 00:07:28 dramatically increase the capabilities
00:07:28 --> 00:07:31 and range of future space missions. In
00:07:31 --> 00:07:34 February, the company secured a dollar10
00:07:34 --> 00:07:36 million grant from the Texas Space
00:07:36 --> 00:07:38 Commission to support their work on a
00:07:38 --> 00:07:41 lifting body re-entry vehicle. They're
00:07:41 --> 00:07:43 partnering with Rodium Scientific to
00:07:43 --> 00:07:44 explore how this vehicle could be used
00:07:44 --> 00:07:47 for microgravity research, potentially
00:07:47 --> 00:07:49 offering a valuable service for
00:07:49 --> 00:07:51 returning biomedical experiments safely
00:07:51 --> 00:07:52 to Earth from
00:07:52 --> 00:07:54 space. We all know the universe will
00:07:54 --> 00:07:57 eventually end, but how and when has
00:07:57 --> 00:07:59 been a subject of intense scientific
00:07:59 --> 00:08:01 debate. Now, fascinating new research
00:08:01 --> 00:08:03 from scientists at Radbood University
00:08:03 --> 00:08:05 suggests the universe's demise might
00:08:05 --> 00:08:07 arrive much sooner than previously
00:08:07 --> 00:08:09 calculated. Though we're still talking
00:08:09 --> 00:08:11 about an almost incomprehensible time
00:08:11 --> 00:08:14 scale, the research team led by Hino
00:08:14 --> 00:08:16 Falca along with colleagues Michael
00:08:16 --> 00:08:18 Wandra and Walter Vanlaccom has
00:08:18 --> 00:08:20 dramatically revised estimates for
00:08:20 --> 00:08:23 cosmic longevity. According to their
00:08:23 --> 00:08:25 calculations, the final decay of the
00:08:25 --> 00:08:27 universe could occur in about 10 to the
00:08:27 --> 00:08:30 78th power years. That's a one followed
00:08:30 --> 00:08:33 by 78 zeros. While this represents a
00:08:33 --> 00:08:34 significant reduction from previous
00:08:34 --> 00:08:37 estimates, it's still billions upon
00:08:37 --> 00:08:39 billions of times the current age of our
00:08:39 --> 00:08:42 cosmos. As Fala himself put it, the
00:08:42 --> 00:08:44 ultimate end of the universe comes much
00:08:44 --> 00:08:46 sooner than expected, but fortunately,
00:08:46 --> 00:08:49 it still takes a very long time. What's
00:08:49 --> 00:08:51 particularly interesting about this
00:08:51 --> 00:08:53 research is how it builds upon Stephven
00:08:53 --> 00:08:56 Hawkings groundbreaking work from 1975.
00:08:56 --> 00:08:58 Hawking theorized that black holes
00:08:58 --> 00:09:01 aren't completely black. They gradually
00:09:01 --> 00:09:03 emit tiny amounts of radiation, now
00:09:03 --> 00:09:05 known as Hawking radiation. Over
00:09:05 --> 00:09:08 immensely long time scales, this process
00:09:08 --> 00:09:10 causes black holes to slowly evaporate
00:09:10 --> 00:09:12 and eventually disappear entirely. The
00:09:12 --> 00:09:14 Radboot team extended this principle to
00:09:14 --> 00:09:17 other dense cosmic objects, including
00:09:17 --> 00:09:19 neutron stars. Their surprising
00:09:19 --> 00:09:21 discovery was that the evaporation
00:09:21 --> 00:09:23 process is driven not just by mass, but
00:09:23 --> 00:09:25 by density. This led to some
00:09:25 --> 00:09:27 counterintuitive findings about decay
00:09:27 --> 00:09:30 timelines. For instance, despite their
00:09:30 --> 00:09:32 extreme gravitational pull and
00:09:32 --> 00:09:34 reputation as cosmic devourers, black
00:09:34 --> 00:09:36 holes share a similar decay timeline
00:09:36 --> 00:09:39 with neutron stars around 10^ the 67th
00:09:40 --> 00:09:42 power years. That's significantly
00:09:42 --> 00:09:43 shorter than previous scientific
00:09:43 --> 00:09:45 estimates. The reason for this
00:09:45 --> 00:09:48 unexpected result is that black holes
00:09:48 --> 00:09:50 lacking a solid surface can partially
00:09:50 --> 00:09:53 reabsorb their emitted radiation, which
00:09:53 --> 00:09:56 actually slows the evaporation process.
00:09:56 --> 00:09:57 To put this in perspective, the
00:09:57 --> 00:09:59 researchers calculated that objects as
00:09:59 --> 00:10:02 small as our moon or even a human would
00:10:02 --> 00:10:05 take approximately 10 to the 90th power
00:10:05 --> 00:10:07 years to evaporate through Hawking-like
00:10:07 --> 00:10:10 radiation. Of course, other natural
00:10:10 --> 00:10:12 processes would end their existence long
00:10:12 --> 00:10:14 before this theoretical timeline played
00:10:14 --> 00:10:16 out. What makes this research
00:10:16 --> 00:10:19 particularly valuable beyond the cosmic
00:10:19 --> 00:10:21 doomsday predictions, is how it helps
00:10:21 --> 00:10:24 bridge the gap between quantum mechanics
00:10:24 --> 00:10:27 and general relativity, two fundamental
00:10:27 --> 00:10:29 theories of physics that have proven
00:10:30 --> 00:10:32 notoriously difficult to reconcile. As
00:10:32 --> 00:10:35 co-author Walter Vanucom noted, by
00:10:35 --> 00:10:36 asking these kinds of questions and
00:10:36 --> 00:10:39 looking at extreme cases, we want to
00:10:39 --> 00:10:41 better understand the theory and perhaps
00:10:41 --> 00:10:43 one day we unravel the mystery of
00:10:43 --> 00:10:44 Hawking
00:10:44 --> 00:10:46 radiation. While none of us need worry
00:10:46 --> 00:10:48 about witnessing the universe's final
00:10:48 --> 00:10:51 moments, this research provides valuable
00:10:51 --> 00:10:53 insight into the fundamental workings of
00:10:53 --> 00:10:55 our cosmos and the physical laws that
00:10:56 --> 00:10:57 govern everything from the smallest
00:10:57 --> 00:11:00 particles to the largest structures in
00:11:00 --> 00:11:02 existence. It's a reminder that even in
00:11:02 --> 00:11:05 studying the end of everything, we
00:11:05 --> 00:11:06 continue to deepen our understanding of
00:11:06 --> 00:11:08 the universe we inhabit
00:11:08 --> 00:11:11 today. Have you ever wondered what it is
00:11:11 --> 00:11:13 that astronauts actually do all day on
00:11:13 --> 00:11:15 the ISS? I'm sure some people think they
00:11:16 --> 00:11:17 spend the day looking out the window and
00:11:17 --> 00:11:21 admiring the view. Well, far from it.
00:11:21 --> 00:11:22 Let's take a look at what they did on
00:11:22 --> 00:11:25 Tuesday this week as an example. The
00:11:25 --> 00:11:27 International Space Station continues to
00:11:27 --> 00:11:29 serve as humanity's premier orbital
00:11:29 --> 00:11:33 laboratory with the Expedition 73 crew
00:11:33 --> 00:11:35 currently engaged in a diverse array of
00:11:35 --> 00:11:36 scientific
00:11:36 --> 00:11:38 investigations. NASA astronauts Anne
00:11:38 --> 00:11:42 Mlan, Nicole Ayes, and Johnny Kim have
00:11:42 --> 00:11:43 been particularly busy with
00:11:43 --> 00:11:46 biotechnology research. MLAN dawned a
00:11:46 --> 00:11:48 special biom monitor garment and
00:11:48 --> 00:11:50 headband as part of an experiment
00:11:50 --> 00:11:52 monitoring astronauts psychological
00:11:52 --> 00:11:54 responses before, during, and after
00:11:54 --> 00:11:57 their missions. This research aims to
00:11:57 --> 00:11:59 assess how space travel affects heart
00:11:59 --> 00:12:01 health, crucial knowledge as we plan for
00:12:01 --> 00:12:03 longer duration missions beyond Earth
00:12:03 --> 00:12:05 orbit. Perhaps the most intriguing
00:12:05 --> 00:12:07 experiment currently underway involves
00:12:07 --> 00:12:10 DNA inspired nanomaterials.
00:12:10 --> 00:12:12 MLAN and AIRS have been working in the
00:12:12 --> 00:12:15 life sciences glove box mixing mRNA and
00:12:15 --> 00:12:17 protein solutions to produce special
00:12:17 --> 00:12:19 molecules formed by these
00:12:19 --> 00:12:21 nanomaterials. This research could lead
00:12:21 --> 00:12:23 to more cost-effective inspace
00:12:23 --> 00:12:25 production methods and potentially
00:12:25 --> 00:12:27 revolutionize targeted therapy delivery
00:12:27 --> 00:12:29 back on Earth, improving patient
00:12:29 --> 00:12:31 outcomes with fewer side effects. Fire
00:12:32 --> 00:12:33 safety in space represents another
00:12:33 --> 00:12:36 critical research area. Astronaut Johnny
00:12:36 --> 00:12:37 Kim spent the day installing hardware
00:12:38 --> 00:12:39 for the solid fuel ignition and
00:12:39 --> 00:12:41 extinction experiment, which includes
00:12:41 --> 00:12:43 mist systems designed to extinguish
00:12:43 --> 00:12:45 flames in microgravity. He's also
00:12:45 --> 00:12:47 working with the combustion integrated
00:12:47 --> 00:12:49 rack to better understand the
00:12:49 --> 00:12:51 fundamentals of how fire behaves when
00:12:51 --> 00:12:53 gravity isn't pulling flames upward.
00:12:53 --> 00:12:55 This research isn't merely academic.
00:12:56 --> 00:12:57 Understanding fire behavior and
00:12:57 --> 00:12:59 suppression methods in space is
00:12:59 --> 00:13:01 essential for crew safety on the ISS and
00:13:01 --> 00:13:04 future deep space missions. Meanwhile,
00:13:04 --> 00:13:07 JAXA astronaut and station commander
00:13:07 --> 00:13:09 Takuya Onishi has been focusing on
00:13:09 --> 00:13:11 similar fire safety work in the Japanese
00:13:11 --> 00:13:14 experiment module. He's been handling
00:13:14 --> 00:13:15 gas bottle exchanges in the solid
00:13:16 --> 00:13:18 combustion experiment module and
00:13:18 --> 00:13:19 performing critical leak checks to
00:13:20 --> 00:13:21 ensure safe
00:13:21 --> 00:13:24 operations. Beyond scientific duties,
00:13:24 --> 00:13:26 Onishi has tackled orbital plumbing
00:13:26 --> 00:13:28 tasks, installing recycle tanks and
00:13:28 --> 00:13:30 configuring drain valves, the
00:13:30 --> 00:13:32 unglamorous but essential maintenance
00:13:32 --> 00:13:35 that keeps the station functioning. The
00:13:35 --> 00:13:37 station's three cosminauts, Sergey
00:13:37 --> 00:13:40 Riakov, Alexe Zubritzky, and Kiril
00:13:40 --> 00:13:43 Pescov have primarily focused on
00:13:43 --> 00:13:44 maintenance tasks in the Russian
00:13:44 --> 00:13:47 segment. Their work included removing
00:13:47 --> 00:13:49 cargo, replacing thermal sensors, and
00:13:49 --> 00:13:52 verifying flow sensor installations.
00:13:52 --> 00:13:54 Pescov conducted an Ethernet cables
00:13:54 --> 00:13:56 audit and worked on the intermodular
00:13:56 --> 00:13:58 ventilation system connecting the
00:13:58 --> 00:14:00 Russian and US modules, critical
00:14:00 --> 00:14:02 infrastructure that ensures proper air
00:14:02 --> 00:14:05 circulation throughout the station. This
00:14:05 --> 00:14:07 blend of cuttingedge research and
00:14:07 --> 00:14:09 meticulous maintenance highlights the
00:14:09 --> 00:14:11 dual nature of the ISS as both a
00:14:11 --> 00:14:13 worldclass laboratory and a habitable
00:14:14 --> 00:14:16 outpost in the harsh environment of low
00:14:16 --> 00:14:18 Earth orbit. As the crew continues their
00:14:18 --> 00:14:20 six-month mission, these experiments
00:14:20 --> 00:14:22 will provide valuable data for
00:14:22 --> 00:14:24 scientific advancement and support
00:14:24 --> 00:14:26 humanity's ongoing space exploration
00:14:26 --> 00:14:28 efforts. I think you'll agree there
00:14:28 --> 00:14:30 wasn't much time for just sitting and
00:14:30 --> 00:14:32 looking at the
00:14:32 --> 00:14:34 view. In a significant first for
00:14:34 --> 00:14:36 Europe's satellite navigation system,
00:14:36 --> 00:14:39 Galileo satellite GAT 0104 has been
00:14:39 --> 00:14:41 officially decommissioned after 12 years
00:14:41 --> 00:14:44 of service. This marks a historic
00:14:44 --> 00:14:45 milestone as the first satellite in the
00:14:46 --> 00:14:48 Galileo constellation to be retired,
00:14:48 --> 00:14:50 setting precedent for responsible space
00:14:50 --> 00:14:53 operations in the coming decades. GSAT
00:14:53 --> 00:14:56 0104 holds a special place in European
00:14:56 --> 00:14:59 space history. Launched on October 12,
00:14:59 --> 00:15:01 2012, it was the fourth and final
00:15:01 --> 00:15:03 inorbit validation satellite for the
00:15:03 --> 00:15:06 Galileo program. Most notably, it
00:15:06 --> 00:15:08 participated in a watershed moment on
00:15:08 --> 00:15:11 March 12, 2013 when alongside its fellow
00:15:12 --> 00:15:14 satellites, it enabled the very first
00:15:14 --> 00:15:16 position fix by Europe's independent
00:15:16 --> 00:15:19 satellite navigation system. For a
00:15:19 --> 00:15:20 constellation like Galileo, which serves
00:15:20 --> 00:15:22 as critical public infrastructure
00:15:22 --> 00:15:24 intended to provide uninterrupted
00:15:24 --> 00:15:26 service over decades, decommissioning
00:15:26 --> 00:15:29 activities are as essential as launches.
00:15:29 --> 00:15:30 The retirement process isn't just about
00:15:30 --> 00:15:33 making space safer. It's literally about
00:15:33 --> 00:15:35 making space for new satellites as the
00:15:35 --> 00:15:37 constellation requires continuous
00:15:37 --> 00:15:40 replenishment. The decision to retire
00:15:40 --> 00:15:43 104 came after careful deliberation by a
00:15:43 --> 00:15:45 board chaired by the EU Agency for the
00:15:45 --> 00:15:48 Space Program with participation from
00:15:48 --> 00:15:51 the European Space Agency and European
00:15:51 --> 00:15:53 Commission. Decommissioning activities
00:15:53 --> 00:15:56 began in March 2024 and were completed
00:15:56 --> 00:15:59 last month in April 2025.
00:15:59 --> 00:16:01 What's particularly notable about this
00:16:01 --> 00:16:03 decommissioning is how it aligns with
00:16:03 --> 00:16:05 ISSA's commitment to sustainability in
00:16:05 --> 00:16:08 space. With the growing concern about
00:16:08 --> 00:16:09 space debris threatening current and
00:16:09 --> 00:16:11 future missions, issa has set an
00:16:12 --> 00:16:13 ambitious goal of net zero space
00:16:13 --> 00:16:16 pollution for new missions by 2030. For
00:16:16 --> 00:16:20 G Satsuro 104, engineers used remaining
00:16:20 --> 00:16:23 propellant reserves to place it 700 km
00:16:23 --> 00:16:24 above the operational Galileo
00:16:24 --> 00:16:26 constellation in what's known as a
00:16:26 --> 00:16:29 graveyard orbit. This exceptionally
00:16:29 --> 00:16:31 stable disposal orbit is designed to
00:16:31 --> 00:16:33 remain undisturbed for hundreds of
00:16:33 --> 00:16:35 years, ensuring it won't interfere with
00:16:35 --> 00:16:38 active satellites. The satellite was
00:16:38 --> 00:16:40 then completely passivated by removing
00:16:40 --> 00:16:42 all internal energy sources, including
00:16:42 --> 00:16:45 battery charge. This approach represents
00:16:45 --> 00:16:47 the standard disposal strategy for
00:16:47 --> 00:16:48 satellites in medium Earth and
00:16:48 --> 00:16:51 geostationary orbits where earth
00:16:51 --> 00:16:53 re-entry is generally not feasible.
00:16:53 --> 00:16:55 Future decommissioned Galileo satellites
00:16:55 --> 00:16:57 will be disposed at slightly different
00:16:57 --> 00:16:59 altitudes to maintain safe distance
00:16:59 --> 00:17:02 between them. The Galileo program
00:17:02 --> 00:17:03 continues to thrive despite this
00:17:03 --> 00:17:05 retirement. The constellation currently
00:17:06 --> 00:17:08 provides the same level of performance
00:17:08 --> 00:17:10 with active satellites in all prime
00:17:10 --> 00:17:14 slots plus three active spares. Six more
00:17:14 --> 00:17:15 first generation satellites are ready
00:17:15 --> 00:17:18 for launch and 12 second generation
00:17:18 --> 00:17:20 satellites are in development. This
00:17:20 --> 00:17:22 decommissioning gives the Galileo
00:17:22 --> 00:17:23 program valuable experience that will
00:17:24 --> 00:17:26 prove crucial as more satellites reach
00:17:26 --> 00:17:29 the end of their operational lives in
00:17:29 --> 00:17:31 the coming years. The remaining three
00:17:31 --> 00:17:34 original inorbit validation satellites
00:17:34 --> 00:17:37 have exceeded their design lifetime, but
00:17:37 --> 00:17:39 continue to provide excellent navigation
00:17:39 --> 00:17:41 performance. They'll be reviewed again
00:17:41 --> 00:17:43 in October 2025 to determine if they
00:17:43 --> 00:17:46 should continue operating or join GSAT
00:17:46 --> 00:17:49 0104 in retirement.
00:17:49 --> 00:17:50 Galileo has become the world's most
00:17:50 --> 00:17:53 precise satellite navigation system,
00:17:53 --> 00:17:55 serving over four billion smartphone
00:17:55 --> 00:17:57 users globally since entering open
00:17:57 --> 00:18:01 service in 2017. Beyond consumer
00:18:01 --> 00:18:02 applications, it's making a difference
00:18:02 --> 00:18:05 across rail, maritime, agriculture,
00:18:05 --> 00:18:07 financial timing services, and rescue
00:18:07 --> 00:18:09 operations. A testament to Europe's
00:18:09 --> 00:18:11 commitment to space technology
00:18:11 --> 00:18:12 leadership.
00:18:12 --> 00:18:15 Finally, today, when we think about the
00:18:15 --> 00:18:17 dawn of life on Earth, it's easy to
00:18:17 --> 00:18:20 imagine a process that took eons, a
00:18:20 --> 00:18:22 slow, gradual emergence from complex
00:18:22 --> 00:18:25 chemicals to the first self-replicating
00:18:25 --> 00:18:27 organisms. But fascinating new research
00:18:27 --> 00:18:29 suggests that life might have gotten its
00:18:29 --> 00:18:31 start with surprising speed after our
00:18:31 --> 00:18:33 planet formed, raising profound
00:18:33 --> 00:18:35 questions about the potential for life
00:18:35 --> 00:18:37 elsewhere in the universe.
00:18:37 --> 00:18:39 A recent paper by American astronomer
00:18:39 --> 00:18:41 David Kipping titled Strong Evidence
00:18:41 --> 00:18:44 that abiogenesis is a rapid process on
00:18:44 --> 00:18:46 Earth analoges offers compelling
00:18:46 --> 00:18:48 analysis of when life first emerged on
00:18:48 --> 00:18:51 our planet. The evidence of ancient life
00:18:51 --> 00:18:53 stretches remarkably far back possibly
00:18:53 --> 00:18:55 as far as 4.2 billion years ago,
00:18:55 --> 00:18:57 astonishingly close to Earth's formation
00:18:57 --> 00:19:00 around 4.5 billion years ago. The
00:19:00 --> 00:19:01 timeline is truly remarkable when you
00:19:02 --> 00:19:04 consider the evidence. Fossilized mats
00:19:04 --> 00:19:06 of cyanobacteria known as stromatalites
00:19:06 --> 00:19:09 date back 3.7 billion years. Rocks from
00:19:09 --> 00:19:11 Australia show isotope patterns
00:19:11 --> 00:19:13 consistent with biological activity
00:19:13 --> 00:19:16 dating to 4.1 billion years ago. And
00:19:16 --> 00:19:18 some ancient Canadian rocks contain tiny
00:19:18 --> 00:19:19 filament-like structures that may
00:19:19 --> 00:19:22 represent biological remains from 4.28
00:19:22 --> 00:19:23 billion years
00:19:23 --> 00:19:25 ago. Scientists trying to understand
00:19:25 --> 00:19:27 life's earliest journey often study
00:19:27 --> 00:19:29 what's called LUCA, the last universal
00:19:29 --> 00:19:32 common ancestor. This hypothetical
00:19:32 --> 00:19:34 organism gave rise to all forms of life
00:19:34 --> 00:19:37 on Earth. Bacteria, archa, and
00:19:37 --> 00:19:38 eventually
00:19:38 --> 00:19:40 complex. Current research places Luca's
00:19:40 --> 00:19:42 existence at least 3.6 billion years
00:19:42 --> 00:19:46 ago, possibly as far back as 4.3 billion
00:19:46 --> 00:19:48 years. What Kipping's analysis reveals
00:19:48 --> 00:19:51 is truly significant. Using Besian
00:19:51 --> 00:19:52 statistical methods to evaluate the
00:19:52 --> 00:19:55 evidence, he calculates 13 to1 odds in
00:19:55 --> 00:19:56 favor of rapid
00:19:57 --> 00:19:59 abiogenesis, the spontaneous emergence
00:19:59 --> 00:20:01 of life from non-living matter. This
00:20:01 --> 00:20:03 crosses the threshold of 10:1 that
00:20:03 --> 00:20:05 scientists consider strong evidence,
00:20:05 --> 00:20:07 making this the first time we have
00:20:07 --> 00:20:08 formal statistical support for the
00:20:09 --> 00:20:11 hypothesis that life rapidly emerges
00:20:11 --> 00:20:14 under earthlike conditions.
00:20:14 --> 00:20:16 This finding addresses a long-standing
00:20:16 --> 00:20:18 concern about what's called the weak
00:20:18 --> 00:20:21 anthropic principle. The idea that we
00:20:21 --> 00:20:23 might be observing an atypically quick
00:20:23 --> 00:20:25 emergence of life simply because if life
00:20:26 --> 00:20:28 hadn't appeared early, we wouldn't be
00:20:28 --> 00:20:30 here to observe it. Kipping's odds ratio
00:20:30 --> 00:20:31 provides a more objective measure
00:20:31 --> 00:20:34 supporting rapid abioenesis. But here's
00:20:34 --> 00:20:36 the crucial caveat, and it's one Kipping
00:20:36 --> 00:20:39 emphasizes. This doesn't mean life is
00:20:39 --> 00:20:40 common throughout the universe.
00:20:40 --> 00:20:42 Earthlike conditions themselves may be
00:20:42 --> 00:20:45 exceedingly rare. As he writes, "Our
00:20:45 --> 00:20:47 result does not establish that life is
00:20:47 --> 00:20:49 common since Earth's conditions could be
00:20:49 --> 00:20:51 incredibly rare." There's also an
00:20:52 --> 00:20:53 intriguing tension within these
00:20:53 --> 00:20:56 findings. If life started so quickly,
00:20:56 --> 00:20:58 why did it take roughly 4 billion more
00:20:58 --> 00:21:00 years for intelligent life like us to
00:21:00 --> 00:21:02 evolve? With our sun expected to make
00:21:02 --> 00:21:04 Earth uninhabitable in about 900 million
00:21:04 --> 00:21:07 years as it grows 10% more luminous,
00:21:08 --> 00:21:09 there seems to be a narrow window for
00:21:09 --> 00:21:11 intelligence to emerge before a planet
00:21:11 --> 00:21:13 becomes too hostile. The most humbling
00:21:13 --> 00:21:15 aspect of this research remains our
00:21:15 --> 00:21:18 limited sample size. We still have only
00:21:18 --> 00:21:20 one confirmed example of life in the
00:21:20 --> 00:21:23 universe, Earth. finding evidence of
00:21:23 --> 00:21:25 past or present life elsewhere in our
00:21:25 --> 00:21:27 solar system, whether on Mars, an ocean
00:21:27 --> 00:21:29 moon like Europa, or conclusively
00:21:30 --> 00:21:31 detecting bio signatures on an
00:21:31 --> 00:21:34 exoplanet, would revolutionize our
00:21:34 --> 00:21:37 understanding. As Kipping concludes, our
00:21:37 --> 00:21:39 next task is clearly to look out and
00:21:39 --> 00:21:41 address this question. How common are
00:21:41 --> 00:21:44 conditions analogous to those of Earth?
00:21:44 --> 00:21:47 That search continues with each new
00:21:47 --> 00:21:48 discovery bringing us closer to
00:21:48 --> 00:21:49 answering one of humanity's most
00:21:50 --> 00:21:53 profound questions. Are we alone in the
00:21:53 --> 00:21:56 universe? And that brings us to the end
00:21:56 --> 00:21:58 of another episode of Astronomy Daily,
00:21:58 --> 00:22:00 where today we've traveled from the
00:22:00 --> 00:22:02 moon's surface to the ultimate fate of
00:22:02 --> 00:22:04 the universe with several fascinating
00:22:04 --> 00:22:06 stops in
00:22:06 --> 00:22:08 between. We began with Intuitive
00:22:08 --> 00:22:10 Machines lunar lander mishap, where
00:22:10 --> 00:22:12 alimeter problems and challenging
00:22:12 --> 00:22:14 lighting conditions caused their Nova
00:22:14 --> 00:22:16 Sea lander to topple over in March.
00:22:16 --> 00:22:18 Despite the setback, the company is
00:22:18 --> 00:22:20 implementing important changes for
00:22:20 --> 00:22:22 future missions while diversifying their
00:22:22 --> 00:22:25 space business beyond lunar exploration.
00:22:25 --> 00:22:27 We then ventured to the far reaches of
00:22:27 --> 00:22:30 time itself with research from Radbood
00:22:30 --> 00:22:33 University suggesting the universe's end
00:22:33 --> 00:22:35 may arrive in about 10 to the power of
00:22:35 --> 00:22:38 78 years. Still an incomprehensibly
00:22:38 --> 00:22:40 distant future, but significantly sooner
00:22:40 --> 00:22:42 than previous estimates of 10 to the
00:22:42 --> 00:22:46 power of 1 years.
00:22:46 --> 00:22:48 Up on the International Space Station,
00:22:48 --> 00:22:51 Expedition 73 crew members have been
00:22:51 --> 00:22:53 advancing biotechnology research and
00:22:53 --> 00:22:56 studying fire behavior in microgravity.
00:22:56 --> 00:22:58 Crucial work that improves our
00:22:58 --> 00:23:00 understanding of both space habitation
00:23:00 --> 00:23:03 and life on Earth. We also witnessed a
00:23:03 --> 00:23:04 historical first with the
00:23:04 --> 00:23:07 decommissioning of Galileo satellite
00:23:07 --> 00:23:11 GETZ 104 after 12 years of service. This
00:23:11 --> 00:23:13 pioneering event demonstrates Europe's
00:23:13 --> 00:23:14 commitment to sustainable space
00:23:14 --> 00:23:17 operations and sets a responsible
00:23:17 --> 00:23:19 example for constellation management.
00:23:19 --> 00:23:21 Perhaps most thought-provoking was our
00:23:21 --> 00:23:23 look at new evidence, suggesting life
00:23:24 --> 00:23:26 may have emerged with surprising speed
00:23:26 --> 00:23:28 after Earth formed. David Kipping's
00:23:28 --> 00:23:31 analysis showing strong statistical
00:23:31 --> 00:23:32 support for rapid
00:23:32 --> 00:23:35 abiogenesis raises profound questions
00:23:35 --> 00:23:37 about the potential for life elsewhere
00:23:37 --> 00:23:39 even as we acknowledge the rarity of
00:23:39 --> 00:23:41 earthlike conditions. These stories
00:23:41 --> 00:23:43 remind us that space exploration
00:23:43 --> 00:23:45 continues to challenge our understanding
00:23:45 --> 00:23:48 of the universe and our place within it.
00:23:48 --> 00:23:50 Each discovery brings new questions and
00:23:50 --> 00:23:52 that's what makes astronomy so endlessly
00:23:52 --> 00:23:54 fascinating. If you've enjoyed today's
00:23:54 --> 00:23:56 episode, I invite you to visit our
00:23:56 --> 00:23:57 website at
00:23:57 --> 00:23:59 astronomydaily.io where you can sign up
00:23:59 --> 00:24:01 for our free daily newsletter and catch
00:24:01 --> 00:24:04 up on all the latest space and astronomy
00:24:04 --> 00:24:06 news with our constantly updating space
00:24:06 --> 00:24:09 news feed. You can also subscribe to
00:24:09 --> 00:24:12 Astronomy Daily on Apple Podcasts,
00:24:12 --> 00:24:14 Spotify, YouTube, or wherever you get
00:24:14 --> 00:24:16 your podcast to ensure you never miss an
00:24:16 --> 00:24:19 episode. This is Anna for Astronomy
00:24:19 --> 00:24:21 Daily. Thank you for listening and until
00:24:21 --> 00:24:34 next time, keep looking up.
00:24:34 --> 00:24:36 Stories told.
00:24:36 --> 00:24:43 [Music]