Source:
https://www.spreaker.com/episode/s03e164-artemis-radiation-study-heart-cells-in-space-and-seti-s-galactic-hunt--62113417
Astronomy Daily - The Podcast: S03E164
Welcome to Astronomy Daily, your source for the latest space and Astronomy news. I'm your host, Anna, and today we have an exciting lineup of stories that span from Earth's orbit to distant galaxies. Buckle up and get ready for a thrilling journey through the cosmos.
Highlights:
- Spaceflight Radiation Exposure: During NASA's Artemis I mission, scientists gathered crucial data on radiation exposure using mannequins and advanced sensors. Findings show that enhanced radiation shielding areas provided up to four times more protection, validating spacecraft design for future missions.
- Low Gravity Effects on Heart Cells: Researchers sent human bioengineered heart tissue samples to the ISS. The results revealed significant weakening and disruptions in normal rhythmic beating patterns, highlighting potential health risks for astronauts on extended missions.
- SETI's Search for Alien Technology: In an unprecedented study, scientists used the Murchison Widefield Array to observe 2800 galaxies, searching for technosignatures. While no definitive evidence was found, this research opens new possibilities for future SETI efforts.
- Milky Way's Unique Characteristics: The SAGA survey studied 101 satellite systems similar to our Milky Way, revealing that the number of satellite galaxies varies widely. Our galaxy's relatively low satellite count, despite having the Large Magellanic Cloud, hints at a unique history.
- Mars's Missing Atmosphere: New research suggests Mars's atmosphere may have been absorbed by minerals in Martian clays over billions of years. This theory offers a potential explanation for Mars's transformation and raises the possibility of utilizing trapped methane for future missions.
For more space news, be sure to visit our website at https://www.astronomydaily.io There you can sign up for our free Daily newsletter, catch up on all the latest space and Astronomy news with our constantly updating newsfeed, and listen to all our back episodes.
Don't forget to follow us on social media. Just search for #AstroDailyPod on Facebook, X, YouTubeMusic, and TikTok.
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.
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00:00:00 --> 00:00:02 hello and welcome to astronomy daily I'm
00:00:02 --> 00:00:04 your host Anna bringing you the latest
00:00:04 --> 00:00:06 and Most Fascinating space in astronomy
00:00:06 --> 00:00:08 news today we've got an exciting lineup
00:00:09 --> 00:00:11 of stories that span from Earth's orbit
00:00:11 --> 00:00:13 all the way to distant galaxies we'll be
00:00:14 --> 00:00:15 delving into some groundbreaking
00:00:15 --> 00:00:17 research on spaceflight radiation
00:00:17 --> 00:00:19 exposure which could help keep our
00:00:19 --> 00:00:21 astronauts safer on Long Journeys then
00:00:21 --> 00:00:23 we'll explore how low gravity affects
00:00:23 --> 00:00:25 heart cells a crucial factor for
00:00:25 --> 00:00:28 Extended space missions next up we'll
00:00:28 --> 00:00:30 discuss an unprecedented seti study that
00:00:30 --> 00:00:31 searching for alien technology in
00:00:31 --> 00:00:34 thousands of galaxies we'll also take a
00:00:34 --> 00:00:36 closer look at our Cosmic neighborhood
00:00:36 --> 00:00:37 with new insights into what makes our
00:00:37 --> 00:00:40 Milky Way unique and finally we'll
00:00:40 --> 00:00:42 unravel the mystery of Mars missing
00:00:42 --> 00:00:44 atmosphere could the answer have been
00:00:44 --> 00:00:46 right under our noses all along so
00:00:46 --> 00:00:48 buckle up and get ready for a thrilling
00:00:48 --> 00:00:51 Journey Through the cosmos let's dive in
00:00:51 --> 00:00:53 in a groundbreaking study conducted
00:00:53 --> 00:00:55 during NASA's Artemis 1 Mission
00:00:55 --> 00:00:57 scientists have gathered crucial data on
00:00:57 --> 00:01:00 radiation exposure for astronauts using
00:01:00 --> 00:01:02 Innovative methods the research team
00:01:02 --> 00:01:03 employed mannequins named Helga and
00:01:03 --> 00:01:06 Zohar along with Advanced sensors placed
00:01:06 --> 00:01:08 inside the spacecraft to measure
00:01:08 --> 00:01:10 radiation levels throughout the 25-day
00:01:10 --> 00:01:12 uncrewed journey around the Moon and
00:01:12 --> 00:01:14 back to Earth this data is vital for
00:01:14 --> 00:01:16 understanding and mitigating the risks
00:01:16 --> 00:01:18 associated with long duration space
00:01:18 --> 00:01:19 travel beyond Earth's protective
00:01:19 --> 00:01:22 magnetic field radiation exposure poses
00:01:22 --> 00:01:24 significant health concerns for
00:01:24 --> 00:01:26 astronauts including increased cancer
00:01:26 --> 00:01:28 risk radiation sickness and potential
00:01:28 --> 00:01:31 impacts on the central nervous system
00:01:31 --> 00:01:33 the study revealed that areas within the
00:01:33 --> 00:01:35 capsule designed with enhanced radiation
00:01:35 --> 00:01:37 shielding including a designated storm
00:01:38 --> 00:01:39 shelter for astronauts during solar
00:01:39 --> 00:01:42 events provided up to four times more
00:01:42 --> 00:01:45 protection than less shielded areas this
00:01:45 --> 00:01:47 finding validates the spacecraft's
00:01:47 --> 00:01:49 design for future missions and
00:01:49 --> 00:01:50 highlights the importance of strategic
00:01:50 --> 00:01:53 shielding placement interestingly the
00:01:53 --> 00:01:55 orientation of the Orion spacecraft
00:01:55 --> 00:01:56 during flight also affected radiation
00:01:56 --> 00:01:59 exposure levels when the craft made a
00:01:59 --> 00:02:01 90° turn while passing the inner Van
00:02:01 --> 00:02:04 Allen belt radiation exposure dropped by
00:02:04 --> 00:02:06 half demonstrating the directional
00:02:06 --> 00:02:08 nature of space radiation and the
00:02:08 --> 00:02:11 potential for mitigating exposure
00:02:11 --> 00:02:13 through careful spacecraft positioning
00:02:13 --> 00:02:15 and while on the subject of astronaut
00:02:15 --> 00:02:18 Health in a fascinating study scientists
00:02:18 --> 00:02:20 have uncovered new insights into how low
00:02:20 --> 00:02:22 gravity affects heart muscle cells
00:02:22 --> 00:02:24 during space travel researchers sent
00:02:24 --> 00:02:26 human bio-engineered heart tissue
00:02:26 --> 00:02:27 samples to the International Space
00:02:27 --> 00:02:29 Station for 30 days to observe the
00:02:30 --> 00:02:31 effects of microgravity on cardiac
00:02:31 --> 00:02:34 function the results Were Striking the
00:02:34 --> 00:02:36 heart tissues exposed to low gravity
00:02:36 --> 00:02:38 conditions showed significant weakening
00:02:38 --> 00:02:39 compared to their Earthbound
00:02:39 --> 00:02:42 counterparts more alarmingly the space
00:02:42 --> 00:02:44 fairing samples experienced disruptions
00:02:44 --> 00:02:45 in their normal rhythmic beating
00:02:45 --> 00:02:47 patterns This research provides crucial
00:02:48 --> 00:02:49 information about the potential health
00:02:49 --> 00:02:51 risks astronauts face during extended
00:02:51 --> 00:02:53 missions beyond Earth's protective
00:02:53 --> 00:02:55 magnetic field as we look towards
00:02:55 --> 00:02:57 long-term space exploration and possible
00:02:57 --> 00:03:00 missions to Mars understand Ing and
00:03:00 --> 00:03:01 mitigating these effects on the human
00:03:01 --> 00:03:04 body becomes increasingly important the
00:03:04 --> 00:03:06 study also offers potential applications
00:03:06 --> 00:03:08 for heart research here on Earth
00:03:08 --> 00:03:10 providing new models for studying muscle
00:03:10 --> 00:03:12 aging and developing Therapeutics as we
00:03:12 --> 00:03:14 continue to push the boundaries of space
00:03:14 --> 00:03:16 exploration This research underscores
00:03:16 --> 00:03:18 the need for innovative solutions to
00:03:18 --> 00:03:20 protect astronaut Health in the
00:03:20 --> 00:03:23 challenging environment of outer space
00:03:23 --> 00:03:25 next up the search goes on in a
00:03:25 --> 00:03:27 groundbreaking study scientists have
00:03:27 --> 00:03:29 taken the search for extraterrestrial
00:03:29 --> 00:03:31 intelligence to New Heights or rather
00:03:31 --> 00:03:34 new distances the SEI Institute Berkeley
00:03:34 --> 00:03:35 SEI Research Center and the
00:03:35 --> 00:03:37 International Center for radioastronomy
00:03:37 --> 00:03:39 research have joined forces to conduct
00:03:39 --> 00:03:41 the first ever search for alien
00:03:41 --> 00:03:44 technology beyond our own Galaxy using
00:03:44 --> 00:03:46 the powerful merchison Widefield array
00:03:46 --> 00:03:48 in Western Australia researchers were
00:03:48 --> 00:03:51 able to observe an astounding 2
00:03:51 --> 00:03:54 galaxies in a single session this
00:03:54 --> 00:03:56 unprecedented scope allows scientists to
00:03:56 --> 00:03:58 cast a much wider net in their hunt for
00:03:58 --> 00:04:00 signs of advanced civilization
00:04:00 --> 00:04:03 the study targeted low radio frequencies
00:04:03 --> 00:04:05 around 100 MHz a range that could
00:04:05 --> 00:04:08 potentially reveal techno signatures
00:04:08 --> 00:04:11 telltale signs of alien technology while
00:04:11 --> 00:04:12 no definitive evidence of
00:04:13 --> 00:04:14 extraterrestrial intelligence was found
00:04:14 --> 00:04:17 in this initial search the research has
00:04:17 --> 00:04:19 opened up exciting new possibilities for
00:04:19 --> 00:04:22 future seti efforts this Innovative
00:04:22 --> 00:04:23 approach marks a significant Leap
00:04:23 --> 00:04:25 Forward in our quest to answer one of
00:04:25 --> 00:04:27 Humanity's most profound questions are
00:04:27 --> 00:04:30 we alone in the universe by by expanding
00:04:30 --> 00:04:31 the search beyond the confines of the
00:04:31 --> 00:04:34 Milky Way we're increasing our chances
00:04:34 --> 00:04:36 of detecting any potential Cosmic
00:04:36 --> 00:04:38 neighbors that might be out there now
00:04:38 --> 00:04:39 let's take a look at our own
00:04:39 --> 00:04:41 neighborhood the satellites around
00:04:41 --> 00:04:43 Galactic analog survey or Saga for short
00:04:44 --> 00:04:45 has recently completed an extensive
00:04:46 --> 00:04:49 study of 101 satellite systems similar
00:04:49 --> 00:04:51 to our own Milky Way this groundbreaking
00:04:51 --> 00:04:53 research provides fascinating new
00:04:53 --> 00:04:55 insights into just how unique our
00:04:55 --> 00:04:57 Galactic neighborhood might be the
00:04:57 --> 00:04:58 survey focused on identifying and
00:04:58 --> 00:05:00 characterizing satellite galaxies
00:05:00 --> 00:05:03 orbiting around host galaxies with
00:05:03 --> 00:05:05 similar mass to the Milky Way these
00:05:05 --> 00:05:06 smaller galaxies captured by the
00:05:06 --> 00:05:09 gravitational pull of their larger hosts
00:05:09 --> 00:05:11 can tell us a lot about Galactic
00:05:11 --> 00:05:13 Evolution and structure one of the most
00:05:13 --> 00:05:14 intriguing findings is that the number
00:05:15 --> 00:05:17 of satellite galaxies in these systems
00:05:17 --> 00:05:20 varies widely ranging from 0 to 13 our
00:05:20 --> 00:05:22 Milky Way with its four known satellite
00:05:22 --> 00:05:24 galaxies Falls somewhere in the middle
00:05:24 --> 00:05:27 of this range however when considering
00:05:27 --> 00:05:30 the presence of the large melanic Cloud
00:05:30 --> 00:05:33 our galaxy appears to be somewhat of an
00:05:33 --> 00:05:35 outlier the study suggests that systems
00:05:36 --> 00:05:38 with a massive satellite like the LMC
00:05:38 --> 00:05:40 tend to have a higher total number of
00:05:40 --> 00:05:42 satellites this makes our Milky Way's
00:05:42 --> 00:05:44 relatively low satellite count even more
00:05:44 --> 00:05:47 puzzling hinting at a potentially unique
00:05:47 --> 00:05:49 history or characteristics of our
00:05:49 --> 00:05:51 Galactic system these findings not only
00:05:51 --> 00:05:52 shed light on the Milky Ways place in
00:05:53 --> 00:05:55 the cosmic neighborhood but also provide
00:05:55 --> 00:05:57 valuable data for improving our models
00:05:57 --> 00:06:00 of Galaxy formation and evolution
00:06:00 --> 00:06:02 and we couldn't let an episode go by
00:06:02 --> 00:06:04 without a Mars story so here's today's
00:06:05 --> 00:06:07 in a fascinating twist to the mystery of
00:06:07 --> 00:06:09 Mars's vanished atmosphere new research
00:06:09 --> 00:06:12 suggests it might not be lost to space
00:06:12 --> 00:06:14 after all but rather hiding in plain
00:06:14 --> 00:06:16 sight right on the planet's surface
00:06:17 --> 00:06:18 scientists now believe that the red
00:06:18 --> 00:06:19 planet's atmosphere may have been
00:06:19 --> 00:06:21 absorbed by minerals and Martian Clays
00:06:21 --> 00:06:23 over billions of years this
00:06:23 --> 00:06:25 groundbreaking Theory offers a potential
00:06:25 --> 00:06:27 explanation for how Mars transformed
00:06:27 --> 00:06:29 from a world potentially capable of
00:06:29 --> 00:06:32 supporting life to the cold Barren
00:06:32 --> 00:06:34 planet we see today the process involves
00:06:34 --> 00:06:36 a series of chemical reactions where
00:06:36 --> 00:06:38 water trickled through certain rock
00:06:38 --> 00:06:40 types setting off a chain of events that
00:06:40 --> 00:06:42 essentially sucked carbon dioxide out of
00:06:42 --> 00:06:44 the atmosphere what's particularly
00:06:44 --> 00:06:47 intriguing is that this carbon dioxide
00:06:47 --> 00:06:48 might have been converted into methane
00:06:48 --> 00:06:50 and locked up in the clay surface of
00:06:50 --> 00:06:52 Mars if true this could mean that the
00:06:52 --> 00:06:54 atmosphere is still present just in a
00:06:54 --> 00:06:56 different form it's an exciting prospect
00:06:56 --> 00:06:58 that not only solves a long-standing
00:06:58 --> 00:07:00 puzzle but also raises the possibility
00:07:00 --> 00:07:03 of utilizing this trapped methane as a
00:07:03 --> 00:07:06 potential energy source for future Mars
00:07:06 --> 00:07:08 missions and that wraps up today's
00:07:08 --> 00:07:10 episode of astronomy daily I'm your host
00:07:10 --> 00:07:12 Anna if you want to stay up toate with
00:07:12 --> 00:07:14 all the latest space and astronomy news
00:07:14 --> 00:07:17 head over to our website at astronomy
00:07:17 --> 00:07:19 daily. there you can sign up for our
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00:07:33 --> 00:07:34 much for listening and I'll catch you
00:07:34 --> 00:07:36 next time for more exciting space
00:07:36 --> 00:07:38 discoveries and astronomical wonders and
00:07:38 --> 00:07:46 remember keep looking up
00:07:46 --> 00:07:59 [Music]
00:07:59 --> 00:08:03 St told