Source:
https://www.spreaker.com/episode/s03e129-dinosaur-killer-asteroid-s-origin-tianwen-1-s-mars-map-and-hypervelocity-star-discovery--61049840
Welcome to Astronomy Daily, your ultimate source for the latest in space and Astronomy news. I'm your host, Anna, and today we have an exciting lineup of stories that will take you on a journey through some of the most intriguing recent updates in the cosmos. Whether you're a seasoned space enthusiast or just curious about what's happening up there, this podcast is the perfect place for you to catch up on the latest discoveries. So sit back, relax, and let's dive into today's stellar stories.
- **Asteroid That Wiped Out the Dinosaurs Originated Beyond Jupiter**: Recent findings have shed new light on the asteroid that ended the reign of the dinosaurs. Researchers have pinpointed that this massive asteroid, which collided with the Yucatan peninsula 66 million years ago, originated beyond Jupiter.
- **China's Tianwen-1 Mission Unveils High-Resolution Global Color Map of Mars**: China's Tianwen-1 mission has released a groundbreaking, high-resolution global color map of Mars. This map offers unprecedented detail and accuracy, surpassing previous global images with a resolution of 76 meters per pixel.
- **Hypervelocity Star Discovered by Citizen Scientists**: A hypervelocity star named J1249+36 has been identified by citizen scientists participating in the Backyard Worlds: Planet 9 project. This star is speeding through our galaxy at about 1.3 million mph, making it the first very low mass hypervelocity star discovered.
- **Ensuring Astronauts' Mental Well-Being in Space**: Life on the International Space Station (ISS) can seriously impact the performance and well-being of astronauts. Studies on the ISS are focused on understanding these effects and testing new technologies to counteract them.
For more Astronomy Daily, including our continually updating newsfeed, visit our website at https://www.astronomydaily.io.
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Keep looking up, and I'll see you next time!
00:00:00 --> 00:00:01 hello everyone and welcome to another
00:00:01 --> 00:00:04 episode of astronomy daily I'm your host
00:00:04 --> 00:00:06 Anna and I'm thrilled to have you join
00:00:06 --> 00:00:08 me today as we embark on another
00:00:08 --> 00:00:10 fascinating Journey Through the cosmos
00:00:10 --> 00:00:12 whether you're a season space Enthusiast
00:00:12 --> 00:00:14 or just curious about what's happening
00:00:14 --> 00:00:16 up there in the final frontier this
00:00:16 --> 00:00:18 podcast is the perfect place for you to
00:00:18 --> 00:00:20 catch up on the latest news and
00:00:20 --> 00:00:22 discoveries in the world of Astronomy
00:00:22 --> 00:00:24 Today we've got an exciting lineup of
00:00:24 --> 00:00:26 stories to explore we'll delve into
00:00:26 --> 00:00:28 groundbreaking research revealing that
00:00:28 --> 00:00:30 the asteroid that wiped out the dinosaur
00:00:30 --> 00:00:33 originated from Beyond Jupiter will also
00:00:33 --> 00:00:35 reveal the incredible technological
00:00:35 --> 00:00:38 achievements of China's t11 Mission
00:00:38 --> 00:00:39 which has just unveiled a stunning
00:00:39 --> 00:00:42 highresolution Global color map of Mars
00:00:42 --> 00:00:45 plus we'll Marvel at the discovery of a
00:00:45 --> 00:00:47 hyper velocity star identified by
00:00:47 --> 00:00:49 ordinary citizen scientists and we'll
00:00:50 --> 00:00:51 discuss the Innovative research being
00:00:51 --> 00:00:54 done to ensure astronauts can maintain
00:00:54 --> 00:00:56 their mental well-being while living and
00:00:56 --> 00:01:00 working in space so sit back relax and
00:01:00 --> 00:01:01 get ready to Journey Through the
00:01:01 --> 00:01:03 Universe with me we've got a stellar
00:01:03 --> 00:01:05 show lined up for you and I can't wait
00:01:05 --> 00:01:09 to dive into these stories let's get
00:01:09 --> 00:01:11 started have you ever wondered about the
00:01:11 --> 00:01:13 Colossal event that wiped out the
00:01:13 --> 00:01:15 dinosaurs recent findings have shed new
00:01:15 --> 00:01:18 light on that very asteroid indicating
00:01:18 --> 00:01:20 it originated Beyond Jupiter in the
00:01:20 --> 00:01:23 outer solar system 66 million years ago
00:01:23 --> 00:01:24 a massive asteroid estimated to be
00:01:24 --> 00:01:27 around 6 to n miles wide collided with
00:01:27 --> 00:01:29 what is now the Yucatan Peninsula in
00:01:29 --> 00:01:31 Mexico this cataclysmic event not only
00:01:31 --> 00:01:33 ended the reign of the dinosaurs but
00:01:33 --> 00:01:36 also wiped out about 3/4 of the world
00:01:36 --> 00:01:38 species researchers have now pinpointed
00:01:38 --> 00:01:40 that this asteroid was a carbonaceous or
00:01:40 --> 00:01:43 ctype asteroid falling under a category
00:01:43 --> 00:01:46 Laden with high concentrations of carbon
00:01:46 --> 00:01:47 these findings rule out other theories
00:01:47 --> 00:01:50 suggesting the impactor was a comet or
00:01:50 --> 00:01:52 that the debris was the result of
00:01:52 --> 00:01:54 volcanic activity the study unraveled
00:01:54 --> 00:01:56 this Mystery by analyzing the Isotopes
00:01:56 --> 00:01:58 of ruthenium in the debris layer left
00:01:58 --> 00:02:01 behind by the impact ruthenium Isotopes
00:02:01 --> 00:02:02 are particularly telling because their
00:02:03 --> 00:02:05 isotopic signature in the clay layer was
00:02:05 --> 00:02:06 almost completely from the impactor
00:02:06 --> 00:02:09 itself offering a clear distinction
00:02:09 --> 00:02:10 between inner and outer solar system
00:02:10 --> 00:02:13 materials the researchers concluded that
00:02:13 --> 00:02:15 the isotopic ratios matched those found
00:02:15 --> 00:02:18 in ctype asteroids thus confirming the
00:02:18 --> 00:02:21 Extraterrestrial origin this asteroid's
00:02:21 --> 00:02:23 journey likely began in the vast icy
00:02:23 --> 00:02:25 reaches Beyond Jupiter before it
00:02:25 --> 00:02:27 migrated Inward and ended up in the main
00:02:27 --> 00:02:30 asteroid belt between Mars and Jupiter
00:02:30 --> 00:02:32 then possibly due to a collision it was
00:02:32 --> 00:02:34 sent hurdling towards Earth sealing the
00:02:34 --> 00:02:37 fate of the Dinosaurs the chalub impact
00:02:37 --> 00:02:40 leaving a crater 112 Mi wide and 12 mil
00:02:40 --> 00:02:42 deep triggered a series of geological
00:02:42 --> 00:02:45 and environmental disasters ultimately
00:02:45 --> 00:02:47 giving mammals a chance to dominate and
00:02:47 --> 00:02:51 eventually leading to the rise of humans
00:02:51 --> 00:02:52 understanding the origins of this
00:02:52 --> 00:02:54 asteroid not only fills a crucial Gap in
00:02:54 --> 00:02:56 the story of Earth's history but also
00:02:57 --> 00:02:58 enriches our comprehension of the Solar
00:02:58 --> 00:03:00 System's Dynamics
00:03:00 --> 00:03:01 another crucial Insight is that
00:03:01 --> 00:03:04 carbonaceous asteroids although common
00:03:04 --> 00:03:06 in the outer solar system rarely strike
00:03:06 --> 00:03:09 Earth making this particular event
00:03:09 --> 00:03:11 extraordinarily unique this new research
00:03:11 --> 00:03:14 gives us a fascinating Peak into the
00:03:14 --> 00:03:16 ancient Cosmic events that drastically
00:03:16 --> 00:03:18 shaped life on our planet and as we
00:03:18 --> 00:03:21 decode these Stellar Secrets it not only
00:03:21 --> 00:03:23 satisfies our curiosity but may also
00:03:23 --> 00:03:25 alert us to the nature of other space
00:03:25 --> 00:03:28 objects that could someday cross our
00:03:28 --> 00:03:30 path again
00:03:30 --> 00:03:31 let's turn our attention to Mars the
00:03:31 --> 00:03:33 planet that keeps on giving one of the
00:03:33 --> 00:03:35 most exciting developments in Mars
00:03:35 --> 00:03:38 exploration comes from China's tien1
00:03:39 --> 00:03:40 Mission which has released a
00:03:40 --> 00:03:43 groundbreaking highresolution Global
00:03:43 --> 00:03:45 color map of Mars This is a significant
00:03:45 --> 00:03:47 Leap Forward for scientists and space
00:03:47 --> 00:03:49 enthusiasts alike as it offers
00:03:49 --> 00:03:51 unprecedented detail and accuracy
00:03:51 --> 00:03:53 allowing us to view the Martian surface
00:03:53 --> 00:03:56 in ways never possible before so why is
00:03:56 --> 00:03:59 this map such a big deal prior to tan 1
00:03:59 --> 00:04:01 the best global images of Mars came from
00:04:01 --> 00:04:03 various missions but they had spatial
00:04:03 --> 00:04:05 resolutions exceeding 1 kilm meaning
00:04:05 --> 00:04:08 finer details were often blurred for
00:04:08 --> 00:04:10 example the Viking colorized Global
00:04:10 --> 00:04:13 Mosaic one of the best prior data sets
00:04:13 --> 00:04:15 could only manage resolutions of about
00:04:15 --> 00:04:19 232 m per pixel this new map from chen11
00:04:19 --> 00:04:21 surpasses that by a wide margin
00:04:21 --> 00:04:23 achieving a remarkable resolution of 76
00:04:24 --> 00:04:26 m per pixel the journey to create this
00:04:26 --> 00:04:29 stunning map began in July 2022 the
00:04:29 --> 00:04:30 mission utilized Iz the moderate
00:04:30 --> 00:04:33 resolution imaging camera moric on its
00:04:33 --> 00:04:37 Orbiter completing 284 orbits and
00:04:37 --> 00:04:38 capturing
00:04:38 --> 00:04:41 14,7 57 images to cover the entire
00:04:42 --> 00:04:44 surface of Mars these images with
00:04:44 --> 00:04:48 resolutions between 57 and 197 M provide
00:04:48 --> 00:04:51 a near-perfect mosaic of the red planet
00:04:51 --> 00:04:53 Additionally the Mars minerological
00:04:53 --> 00:04:56 spectrometer MMS collected a trove of
00:04:56 --> 00:04:58 data in the visible and near infrared
00:04:58 --> 00:05:01 bands contribut to the highquality color
00:05:01 --> 00:05:03 representation under the expert guidance
00:05:03 --> 00:05:06 of professors Lee chanl and Jen R sha
00:05:07 --> 00:05:09 the chen1 science team along with
00:05:09 --> 00:05:11 collaborators used Advanced bundle
00:05:11 --> 00:05:13 adjustment technology to process the
00:05:13 --> 00:05:16 image data by treating Mars as a unified
00:05:16 --> 00:05:17 adjustment Network they managed to
00:05:17 --> 00:05:20 reduce position deviation between images
00:05:20 --> 00:05:22 to less than one pixel this meticulous
00:05:22 --> 00:05:24 approach ensured that the resulting map
00:05:24 --> 00:05:26 is not only high resolution but also
00:05:26 --> 00:05:28 pixel level
00:05:28 --> 00:05:30 seamless let's talk about an
00:05:30 --> 00:05:32 extraordinary recent discovery that has
00:05:32 --> 00:05:33 sent ripples through the astronomy
00:05:33 --> 00:05:37 Community a hyper velocity star named J
00:05:37 --> 00:05:42 1 + 36 this isn't just any Star it's
00:05:42 --> 00:05:44 speeding through our galaxy at an
00:05:44 --> 00:05:48 incredible rate of about 1.3 million mph
00:05:48 --> 00:05:49 even more a inspiring it was first
00:05:49 --> 00:05:52 spotted by some of the 880 citizen
00:05:52 --> 00:05:53 science volunteers participating in the
00:05:53 --> 00:05:56 backyard world's Planet 9 project it's
00:05:56 --> 00:05:58 amazing to see how collaborative efforts
00:05:58 --> 00:06:00 between professional Astron astronomers
00:06:00 --> 00:06:02 and dedicated amateurs can lead to such
00:06:02 --> 00:06:04 groundbreaking findings hypervelocity
00:06:04 --> 00:06:07 stars are rare and J
00:06:07 --> 00:06:11 1 + 36 holds the distinction of
00:06:11 --> 00:06:13 being the first very low mass
00:06:13 --> 00:06:15 hypervelocity star discovered located
00:06:15 --> 00:06:17 just 400 light years from Earth it
00:06:17 --> 00:06:18 stands as the nearest known
00:06:18 --> 00:06:21 hypervelocity star to our planet to put
00:06:21 --> 00:06:23 it in perspective our sun orbits around
00:06:23 --> 00:06:27 the Milky Way at about 220 km/s J
00:06:28 --> 00:06:31 1 + 30 6 however is moving at almost
00:06:31 --> 00:06:33 three times that speed clocking in at
00:06:33 --> 00:06:39 about 600 km/s what makes J 1 + 36
00:06:39 --> 00:06:40 exceptionally intriguing is its
00:06:41 --> 00:06:42 potential trajectory that suggests it
00:06:42 --> 00:06:44 might eventually escape the
00:06:44 --> 00:06:45 gravitational pull of the Milky Way
00:06:45 --> 00:06:48 entirely this star isn't just speeding
00:06:48 --> 00:06:49 through space it's possibly headed for
00:06:49 --> 00:06:52 an exit from our galaxy such a scenario
00:06:52 --> 00:06:54 leads us to question what forces could
00:06:54 --> 00:06:56 have propelled it to such velocities
00:06:56 --> 00:06:57 there are a couple of fascinating
00:06:57 --> 00:07:00 theories one possibility is that J
00:07:00 --> 00:07:04 1 + 36 was originally in close orbit
00:07:04 --> 00:07:06 with a white dwarf if the white dwarf
00:07:06 --> 00:07:09 underwent a supernova explosion it could
00:07:09 --> 00:07:11 have given J
00:07:11 --> 00:07:15 1 + 36 the necessary kick to achieve
00:07:15 --> 00:07:18 its hyper velocity status another theory
00:07:18 --> 00:07:19 suggests that it might have been flung
00:07:19 --> 00:07:21 out from a globular cluster with black
00:07:21 --> 00:07:22 hole binaries through complex
00:07:22 --> 00:07:23 gravitational
00:07:23 --> 00:07:25 interactions this discovery is
00:07:25 --> 00:07:28 significant not only because it expands
00:07:28 --> 00:07:29 our understanding of hyper veloc
00:07:29 --> 00:07:31 velocity stars but also because it
00:07:31 --> 00:07:33 highlights the effectiveness of Citizen
00:07:33 --> 00:07:36 science projects by partnering with
00:07:36 --> 00:07:38 initiatives like backyard worlds Planet
00:07:38 --> 00:07:40 9 anyone with an interest in astronomy
00:07:40 --> 00:07:42 can contribute to real scientific
00:07:42 --> 00:07:45 discoveries so what's next for J
00:07:45 --> 00:07:49 1 + 36 astronomers are keen on
00:07:49 --> 00:07:51 studying its Elemental composition to
00:07:51 --> 00:07:53 uncover more about its Origins whether
00:07:53 --> 00:07:55 it's the remnants of a supernova or a
00:07:55 --> 00:07:58 dynamical ejection from a globular
00:07:58 --> 00:08:00 cluster this Speedy star offers a
00:08:00 --> 00:08:02 stellar opportunity to unlock more
00:08:02 --> 00:08:04 secrets of our
00:08:05 --> 00:08:07 galaxy life on the International Space
00:08:07 --> 00:08:09 Station is a far cry from what we
00:08:09 --> 00:08:11 experience on Earth imagine seeing
00:08:11 --> 00:08:12 multiple sunrises and sunsets every day
00:08:13 --> 00:08:15 from your confined space dealing with
00:08:15 --> 00:08:16 packed schedules and adjusting to the
00:08:16 --> 00:08:18 lack of gravity these unique conditions
00:08:18 --> 00:08:21 of space flight can seriously impact the
00:08:21 --> 00:08:23 performance and well-being of astronauts
00:08:23 --> 00:08:25 fortunately a range of studies on the
00:08:25 --> 00:08:26 ISS are focused on understanding these
00:08:26 --> 00:08:28 effects and testing new technologies to
00:08:28 --> 00:08:30 counteract them one fascinating project
00:08:30 --> 00:08:33 is es circadian light study this
00:08:33 --> 00:08:35 investigation is testing an Innovative
00:08:35 --> 00:08:36 lighting system designed to help
00:08:36 --> 00:08:38 astronauts maintain a more natural daily
00:08:38 --> 00:08:41 Rhythm also known as circadian rhythm an
00:08:41 --> 00:08:43 LED panel automatically adjusts the
00:08:43 --> 00:08:45 light spectrum throughout the day to
00:08:45 --> 00:08:47 mimic natural daylight conditions on
00:08:47 --> 00:08:49 Earth this study aims to see how this
00:08:49 --> 00:08:51 lighting system influences sleep stress
00:08:51 --> 00:08:53 levels and overall well-being the
00:08:53 --> 00:08:55 insights could also benefit shift
00:08:55 --> 00:08:57 workers and those in extreme or remote
00:08:57 --> 00:08:59 environments back on Earth earlier Isa
00:08:59 --> 00:09:01 conducted the circadian rhythms
00:09:01 --> 00:09:03 investigation which looked at how daily
00:09:03 --> 00:09:05 rhythms are affected during long space
00:09:05 --> 00:09:07 missions in Space the cycles of light
00:09:07 --> 00:09:09 and dark don't match the 24-hour routine
00:09:09 --> 00:09:12 we're used to traditionally measuring
00:09:12 --> 00:09:14 core body temperature has been the gold
00:09:14 --> 00:09:15 standard for determining circadian
00:09:15 --> 00:09:18 rhythms but it can be quite invasive and
00:09:18 --> 00:09:20 inconvenient for this investigation
00:09:20 --> 00:09:22 researchers developed non-invasive skin
00:09:22 --> 00:09:24 sensor technology that continuously
00:09:24 --> 00:09:26 records body core temperature over
00:09:26 --> 00:09:28 extended periods as we look towards
00:09:28 --> 00:09:30 missions to the moon or Mars
00:09:30 --> 00:09:33 communication delays will be inevitable
00:09:33 --> 00:09:35 the Comm delay assessment study explored
00:09:35 --> 00:09:38 how these delays might impact astronauts
00:09:38 --> 00:09:39 dealing with medical and other
00:09:39 --> 00:09:42 emergencies the findings showed that
00:09:42 --> 00:09:44 communication delays increase stress and
00:09:44 --> 00:09:47 frustration reduce task efficiency and
00:09:47 --> 00:09:49 impair teamwork however the study also
00:09:49 --> 00:09:51 highlighted potential countermeasures
00:09:51 --> 00:09:53 such as enhance training and improve
00:09:53 --> 00:09:55 teamwork strategies to mitigate these
00:09:55 --> 00:09:58 challenges moving on to mental health
00:09:58 --> 00:09:59 the neurom mapping study has been
00:09:59 --> 00:10:01 investigating how space flight Alters
00:10:01 --> 00:10:03 brain structure and function not only
00:10:03 --> 00:10:05 did this research find significant
00:10:05 --> 00:10:07 changes in brain connectivity but it
00:10:07 --> 00:10:09 also identified substantial increases in
00:10:09 --> 00:10:12 brain volume linked to longer missions
00:10:12 --> 00:10:13 the finding suggests that intervals
00:10:13 --> 00:10:15 between missions should be more than 3
00:10:15 --> 00:10:18 years to allow for full recovery for a
00:10:18 --> 00:10:20 more personal perspective the journal's
00:10:20 --> 00:10:21 investigation had crew members write
00:10:21 --> 00:10:24 daily entries these entries provided
00:10:24 --> 00:10:25 valuable insights into how various
00:10:25 --> 00:10:28 factors like work sleep and group
00:10:28 --> 00:10:30 interactions affect mental well-being in
00:10:30 --> 00:10:32 Space the study's findings are helping
00:10:32 --> 00:10:34 improve living and working conditions
00:10:34 --> 00:10:37 for future astronauts lastly issa's VR
00:10:37 --> 00:10:39 mental Care Project is exploring the use
00:10:39 --> 00:10:42 of virtual reality technology to help
00:10:42 --> 00:10:44 astronauts relax and maintain better
00:10:44 --> 00:10:46 mental health during their missions
00:10:46 --> 00:10:49 using a VR headset astronauts can escape
00:10:49 --> 00:10:51 to virtually simulated environments
00:10:51 --> 00:10:53 potentially easing stress anxiety and
00:10:53 --> 00:10:55 even post-traumatic stress
00:10:55 --> 00:10:57 disorder thank you so much for joining
00:10:57 --> 00:11:00 me on this episode of astronomy daily I
00:11:00 --> 00:11:01 hope you found our journey through the
00:11:01 --> 00:11:03 latest discoveries in space and
00:11:03 --> 00:11:05 astronomy as fascinating as I did I'm
00:11:05 --> 00:11:07 Anna and it's always a pleasure to share
00:11:07 --> 00:11:10 this Cosmic adventure with you if you
00:11:10 --> 00:11:11 want to stay updated with the latest
00:11:11 --> 00:11:13 happenings in the universe don't forget
00:11:13 --> 00:11:16 to visit our website at astronomy
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00:11:22 --> 00:11:23 astronomy news with our constantly
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00:11:28 --> 00:11:31 also on on social media just search for
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00:11:38 --> 00:11:40 enthusiasts once again I'm Anna and this
00:11:40 --> 00:11:42 has been astronomy daily keep looking up
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00:11:50 --> 00:12:04 [Music]
00:12:04 --> 00:12:07 told