Astronomy Daily - The Podcast: S03E196
Welcome to Astronomy Daily, your go-to source for the latest in space and Astronomy news. I'm your host, Anna, and today we have an incredible lineup of stories that will take you from the mysterious sounds of Earth's magnetic field reversals to groundbreaking discoveries about black hole jets.
Highlights:
- Earth's Magnetic Field Reversals: Discover the fascinating soundscape of Earth's magnetic pole flips, as recreated by the European Space Agency. Using data from the Lachamps event, this project offers a unique auditory experience of geological events that might be overdue for a repeat.
- Revolutionary Space Propulsion: Researchers at the University of Illinois have developed a multimode propulsion system that could transform lunar missions. This innovative approach combines high thrust chemical and low thrust electric propulsion, using a single propellant for unprecedented flexibility and efficiency.
- Black Hole Jet Mysteries : New research from the University of Michigan reveals surprising details about the jets emitted by supermassive black holes. Observations from NASA's Chandra X-Ray Observatory challenge our understanding of these cosmic phenomena, highlighting complex physics at play.
- Solar Flare Spectacle : A powerful X2.0 solar flare erupted from the sun on Halloween, causing significant radio blackouts. While it didn't produce a coronal mass ejection, forecasters predict more flares are on the horizon.
- Vega's Smooth Debris Disk: Joint observations from NASA's Hubble and James Webb telescopes uncover an unusually smooth debris disk around Vega. This discovery challenges current theories about planetary system formation and behavior.
- Explore Europa Virtually: NASA's updated Europa Trek web portal allows enthusiasts to virtually explore Jupiter's icy moon. This tool offers a preview of what the Europa Clipper probe might discover when it arrives in six years. Link : https://trek.nasa.gov/europa/ (https://trek.nasa.gov/europa/)
For more cosmic updates, visit our website at astronomydaily.io (https://www.astronomydaily.io) . Sign up for our free Daily newsletter to stay informed on all things space. Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTube, Tumblr, and TikTok. Share your thoughts and connect with fellow space enthusiasts.
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 --> 00:00:00 [Music]
00:00:00 --> 00:00:02 welcome to astronomy daily your source
00:00:02 --> 00:00:04 for the latest space and astronomy news
00:00:04 --> 00:00:06 today we have an incredible lineup of
00:00:06 --> 00:00:08 stories from across the cosmos we'll be
00:00:08 --> 00:00:10 exploring everything from the mysterious
00:00:10 --> 00:00:12 sounds of Earth's magnetic field
00:00:12 --> 00:00:14 reversals to groundbreaking discoveries
00:00:14 --> 00:00:17 about black hole Jets and much more stay
00:00:17 --> 00:00:19 with us as we journey from our home
00:00:19 --> 00:00:21 planet to the far reaches of space
00:00:21 --> 00:00:23 uncovering the latest developments in
00:00:23 --> 00:00:25 astronomy and space
00:00:25 --> 00:00:28 exploration first up in today's stories
00:00:28 --> 00:00:30 every 450 years are
00:00:30 --> 00:00:31 something remarkable happens to our
00:00:32 --> 00:00:34 planet Earth's magnetic poles completely
00:00:34 --> 00:00:36 flip North becomes South and South
00:00:36 --> 00:00:39 becomes North while this might sound
00:00:39 --> 00:00:41 alarming scientists tell us these
00:00:41 --> 00:00:43 reversals appear to be harmless to life
00:00:43 --> 00:00:44 on Earth though they're certainly
00:00:44 --> 00:00:47 dramatic events the European Space
00:00:47 --> 00:00:49 Agency recently created a fascinating
00:00:49 --> 00:00:51 soundscape of what these magnetic
00:00:51 --> 00:00:53 reversals might sound like using data
00:00:53 --> 00:00:56 from their swarm satellite Mission the
00:00:56 --> 00:00:58 project focused specifically on the
00:00:58 --> 00:01:01 lamps event which occurred about 41
00:01:01 --> 00:01:03 years ago during this event the Earth's
00:01:03 --> 00:01:06 magnetic field weakened to just 5% of
00:01:06 --> 00:01:08 its normal strength for several hundred
00:01:08 --> 00:01:10 years scientists at the Technical
00:01:10 --> 00:01:12 University of Denmark and the German
00:01:12 --> 00:01:14 Research Center for geosciences
00:01:14 --> 00:01:16 transformed this data into an
00:01:16 --> 00:01:19 otherworldly audio experience they
00:01:19 --> 00:01:21 combined natural sounds like Falling
00:01:21 --> 00:01:22 Rocks and creaking wood with more
00:01:22 --> 00:01:25 alien-like elements to create something
00:01:25 --> 00:01:27 that sounds both familiar and strange as
00:01:27 --> 00:01:29 if some ancient force is stirring deep
00:01:30 --> 00:01:45 within our
00:01:45 --> 00:01:46 [Music]
00:01:46 --> 00:01:49 planet the result was so compelling that
00:01:49 --> 00:01:50 it was featured as a public art
00:01:50 --> 00:01:53 installation in Copenhagen where 32
00:01:53 --> 00:01:55 speakers each played sounds representing
00:01:55 --> 00:01:57 magnetic field changes from different
00:01:57 --> 00:02:00 locations around the world
00:02:00 --> 00:02:02 this unique project not only helps us
00:02:02 --> 00:02:04 understand these mysterious geological
00:02:04 --> 00:02:06 events but also gives us a new way to
00:02:06 --> 00:02:08 experience and relate to our planet's
00:02:08 --> 00:02:10 Dynamic magnetic field what makes this
00:02:11 --> 00:02:12 particularly intriguing is that some
00:02:12 --> 00:02:14 scientists believe we might be overdue
00:02:14 --> 00:02:17 for another magnetic pole reversal the
00:02:17 --> 00:02:20 last complete flip happened 780
00:02:20 --> 00:02:22 years ago well beyond the average
00:02:22 --> 00:02:26 interval of 450 years between
00:02:26 --> 00:02:28 reversals next up in what could be a
00:02:29 --> 00:02:30 game-changing devel velopment for space
00:02:30 --> 00:02:32 exploration researchers at the
00:02:32 --> 00:02:35 University of Illinois Urbana champagne
00:02:35 --> 00:02:36 have developed a revolutionary new
00:02:37 --> 00:02:39 propulsion system that could transform
00:02:39 --> 00:02:41 how we send spacecraft to the moon this
00:02:41 --> 00:02:44 Innovative approach known as multimode
00:02:44 --> 00:02:46 propulsion combines both High thrust
00:02:46 --> 00:02:48 chemical propulsion and low thrust
00:02:48 --> 00:02:50 electric propulsion while cleverly using
00:02:50 --> 00:02:52 just a single propellant what makes this
00:02:52 --> 00:02:55 system particularly exciting is its
00:02:55 --> 00:02:57 remarkable flexibility the spacecraft
00:02:57 --> 00:02:59 can switch between High thrust chemical
00:02:59 --> 00:03:02 mode mode for Rapid acceleration and low
00:03:02 --> 00:03:04 thrust electr spray mode for precise
00:03:04 --> 00:03:07 orbital Maneuvers this dual capability
00:03:07 --> 00:03:09 system could significantly reduce the
00:03:09 --> 00:03:11 amount of fuel needed for lunar missions
00:03:12 --> 00:03:13 while offering Mission planners
00:03:13 --> 00:03:15 unprecedented versatility in how they
00:03:15 --> 00:03:18 move spacecraft through space unlike
00:03:18 --> 00:03:21 traditional hybrid propulsion systems
00:03:21 --> 00:03:22 that require separate fuel tanks for
00:03:23 --> 00:03:24 different types of engines this
00:03:24 --> 00:03:27 multimode approach uses a single
00:03:27 --> 00:03:29 chemical propellant like hydren to power
00:03:29 --> 00:03:30 both systems
00:03:30 --> 00:03:32 this dramatic simplification means
00:03:32 --> 00:03:34 spacecraft can be lighter and more
00:03:34 --> 00:03:36 costeffective to launch while still
00:03:36 --> 00:03:37 maintaining the benefits of both
00:03:37 --> 00:03:40 propulsion types the research team has
00:03:40 --> 00:03:42 already demonstrated the feasibility of
00:03:42 --> 00:03:44 this technology for nasar Relevant lunar
00:03:44 --> 00:03:46 missions particularly with small cube
00:03:46 --> 00:03:49 sets their computer simulations show
00:03:49 --> 00:03:51 that multimode propulsion could enable
00:03:51 --> 00:03:53 these compact spacecraft to perform
00:03:53 --> 00:03:54 complex Maneuvers that would be
00:03:55 --> 00:03:57 impossible with conventional propulsion
00:03:57 --> 00:04:00 systems perhaps most importantly this
00:04:00 --> 00:04:02 technology isn't just theoretical it's
00:04:02 --> 00:04:03 being developed for practical
00:04:03 --> 00:04:05 applications the researchers have
00:04:05 --> 00:04:07 created algorithms that can
00:04:07 --> 00:04:08 automatically select the optimal
00:04:08 --> 00:04:11 propulsion mode for any given situation
00:04:11 --> 00:04:13 potentially revolutionizing how we plan
00:04:13 --> 00:04:14 and execute missions between Earth and
00:04:14 --> 00:04:18 the moon and eventually to Mars and
00:04:18 --> 00:04:21 Beyond moving on to our next story
00:04:21 --> 00:04:22 fascinating new research from the
00:04:22 --> 00:04:24 University of Michigan has revealed
00:04:24 --> 00:04:26 surprising details about the powerful
00:04:26 --> 00:04:28 Jets emitted by super massive black
00:04:28 --> 00:04:31 holes by analyzing over two decades of
00:04:31 --> 00:04:33 data from NASA's Chandra x-ray
00:04:33 --> 00:04:35 Observatory scientists have discovered
00:04:35 --> 00:04:37 that these Cosmic Jets behave quite
00:04:37 --> 00:04:39 differently when viewed in x-rays
00:04:39 --> 00:04:42 compared to radio waves the team focused
00:04:42 --> 00:04:44 their attention on the Galaxy Centaurus
00:04:44 --> 00:04:46 a which hosts the closest known black
00:04:46 --> 00:04:49 hole jet to Earth about 12 million light
00:04:49 --> 00:04:51 years away they tracked bright features
00:04:51 --> 00:04:53 called knots within the jet measuring
00:04:53 --> 00:04:55 their movements over time with
00:04:55 --> 00:04:57 remarkable Precision one of the most
00:04:57 --> 00:04:59 striking findings was the detection of a
00:04:59 --> 00:05:03 not moving at an astonishing 94% the
00:05:03 --> 00:05:06 speed of light significantly faster than
00:05:06 --> 00:05:08 similar features observed in radio
00:05:08 --> 00:05:10 wavelengths which only reached about 80%
00:05:10 --> 00:05:14 light speed even more intriguingly this
00:05:14 --> 00:05:16 fastest moving knot was found in an
00:05:16 --> 00:05:18 unexpected location neither closest to
00:05:18 --> 00:05:21 nor farthest from the black hole the
00:05:21 --> 00:05:23 study challenges are previous
00:05:23 --> 00:05:25 understanding of how these Jets behave
00:05:25 --> 00:05:27 earlier radio observations suggested
00:05:27 --> 00:05:29 that the fastest moving structures would
00:05:29 --> 00:05:31 be found closest to the black hole but
00:05:31 --> 00:05:34 the X-ray data tells a different story
00:05:34 --> 00:05:36 this discrepancy between X-ray and radio
00:05:36 --> 00:05:38 observations hints at complex underlying
00:05:38 --> 00:05:40 physics were only beginning to
00:05:40 --> 00:05:42 understand these findings open new
00:05:42 --> 00:05:44 avenues for studying black hole Jets
00:05:44 --> 00:05:46 suggesting that x-ray observations might
00:05:46 --> 00:05:48 reveal unique aspects of these Cosmic
00:05:49 --> 00:05:51 phenomena that remain invisible at other
00:05:51 --> 00:05:53 wavelengths the research team is now
00:05:54 --> 00:05:55 planning to apply their analysis
00:05:55 --> 00:05:58 techniques to Jets from other galaxies
00:05:58 --> 00:06:00 hoping to uncover more secrets about
00:06:00 --> 00:06:02 these enigmatic Cosmic
00:06:02 --> 00:06:05 features the sun certainly got into the
00:06:05 --> 00:06:07 Halloween spirit this year treating us
00:06:07 --> 00:06:10 to quite the spooky spectacle on October
00:06:10 --> 00:06:13 31st a powerful X20 solar flare erupted
00:06:14 --> 00:06:17 from a sunspot designated as AR
00:06:17 --> 00:06:20 3878 lighting up our Stars surface at
00:06:20 --> 00:06:23 5:20 p.m. eastern time this wasn't just
00:06:23 --> 00:06:25 any ordinary flare x-class flares
00:06:25 --> 00:06:27 represent the most powerful category in
00:06:27 --> 00:06:29 our classification system with each one
00:06:29 --> 00:06:31 being 10 times more powerful than the
00:06:31 --> 00:06:35 mclass flares below them the 2.0 rating
00:06:35 --> 00:06:37 indicates this was a particularly strong
00:06:37 --> 00:06:40 event even within its class the blast
00:06:40 --> 00:06:41 packed enough punch to cause significant
00:06:42 --> 00:06:43 radio blackouts across parts of the
00:06:43 --> 00:06:46 Pacific Ocean when these powerful flares
00:06:46 --> 00:06:48 release their burst of ultraviolet
00:06:48 --> 00:06:50 radiation they contemporarily disrupt
00:06:51 --> 00:06:53 our ability to use shortwave radio
00:06:53 --> 00:06:55 communications which is exactly what
00:06:55 --> 00:06:58 happened in this case reaching an R3
00:06:58 --> 00:07:00 strong level on Noah's space weather
00:07:00 --> 00:07:02 scale interestingly while solar flares
00:07:02 --> 00:07:04 can often be accompanied by Massive
00:07:04 --> 00:07:06 eruptions of plasma called coronal mass
00:07:06 --> 00:07:09 ejections or CMEs this event didn't
00:07:09 --> 00:07:11 produce one that means we missed out on
00:07:12 --> 00:07:13 the possibility of seeing auroras in the
00:07:13 --> 00:07:16 following days as it's these CMEs that
00:07:16 --> 00:07:18 interact with Earth's magnetic field to
00:07:18 --> 00:07:21 produce those spectacular light shows
00:07:21 --> 00:07:23 however space weather forecasters are
00:07:23 --> 00:07:25 telling us we're not done yet there's a
00:07:25 --> 00:07:26 good chance we'll see more powerful
00:07:26 --> 00:07:28 flares through the end of the weekend
00:07:28 --> 00:07:30 including the possibility of additional
00:07:30 --> 00:07:33 x-class events it seems our sun is
00:07:33 --> 00:07:35 determined to keep the fireworks going
00:07:35 --> 00:07:37 well after
00:07:37 --> 00:07:39 Halloween here's a great collaboration
00:07:39 --> 00:07:41 story recent joint observations from
00:07:41 --> 00:07:43 NASA's Hubble and James web space
00:07:43 --> 00:07:45 telescopes have revealed an intriguing
00:07:45 --> 00:07:47 mystery surrounding Vega one of the
00:07:48 --> 00:07:50 brightest stars in our northern sky the
00:07:50 --> 00:07:51 telescopes have given us an
00:07:52 --> 00:07:54 unprecedented look at the massive debris
00:07:54 --> 00:07:56 disc that encircles this Celestial
00:07:56 --> 00:07:58 neighbor and what they found has left
00:07:58 --> 00:08:00 astronomers scratching their heads the
00:08:00 --> 00:08:03 disc which stretches nearly 100 billion
00:08:03 --> 00:08:06 miles in diameter appears remarkably and
00:08:06 --> 00:08:10 unusually smooth so smooth in fact that
00:08:10 --> 00:08:11 it's challenging our current
00:08:11 --> 00:08:13 understanding of how planetary systems
00:08:13 --> 00:08:14 typically
00:08:14 --> 00:08:17 behave unlike other similar systems
00:08:17 --> 00:08:19 we've observed there's no obvious
00:08:19 --> 00:08:21 evidence of large planets carving paths
00:08:21 --> 00:08:24 through the dis like Cosmic snow plows
00:08:24 --> 00:08:26 the web telescope detected an infrared
00:08:26 --> 00:08:28 glow from sand-sized particles swirling
00:08:28 --> 00:08:30 around This brilliant blue white star
00:08:30 --> 00:08:32 which outshines our sun by a factor of
00:08:32 --> 00:08:35 40 meanwhile Hubble captured an outer
00:08:35 --> 00:08:37 Halo containing particles no larger than
00:08:37 --> 00:08:40 smoke all reflecting Vega's intense
00:08:40 --> 00:08:42 Starlight what makes this discovery
00:08:42 --> 00:08:44 particularly fascinating is how it
00:08:44 --> 00:08:47 differs from similar nearby Stars take
00:08:47 --> 00:08:49 falout for instance a star of comparable
00:08:50 --> 00:08:52 age distance and temperature to Vega
00:08:52 --> 00:08:54 while fomal how shows three distinct
00:08:54 --> 00:08:57 debris belts likely shephered by planets
00:08:57 --> 00:09:00 Vega's disc is strikingly uniform with
00:09:00 --> 00:09:01 only a subtle Gap at about twice
00:09:02 --> 00:09:04 Neptune's orbital distance from the Sun
00:09:04 --> 00:09:07 this smooth seemingly undisturbed disc
00:09:07 --> 00:09:09 suggests an absence of neptune-sized or
00:09:09 --> 00:09:12 larger planets in wide orbits unlike our
00:09:12 --> 00:09:15 solar system it's forcing astronomers to
00:09:15 --> 00:09:17 rethink their theories about the variety
00:09:17 --> 00:09:19 and formation of planetary systems
00:09:20 --> 00:09:22 proving once again that the Universe has
00:09:22 --> 00:09:24 plenty of surprises left to
00:09:24 --> 00:09:26 reveal while we await the arrival of
00:09:26 --> 00:09:28 NASA's Europa Clipper probe in about 6
00:09:29 --> 00:09:31 years space enthusiasts can now get an
00:09:31 --> 00:09:33 early preview of Jupiter's fascinating
00:09:33 --> 00:09:36 icy Moon through NASA's newly updated
00:09:36 --> 00:09:38 Europa Trek web portal this virtual
00:09:38 --> 00:09:40 exploration tool offers an incredible
00:09:40 --> 00:09:42 opportunity to soar over europa's
00:09:42 --> 00:09:45 mysterious surface using compiled
00:09:45 --> 00:09:47 imagery from previous missions including
00:09:47 --> 00:09:51 Voyager 2 Galileo and Juno one of the
00:09:51 --> 00:09:52 most striking features you'll notice
00:09:52 --> 00:09:55 during these virtual flybys are the dark
00:09:55 --> 00:09:57 lines crisscrossing the moon's surface
00:09:57 --> 00:10:00 known as Linea scient believe these
00:10:00 --> 00:10:02 markings are actually cracks in europa's
00:10:02 --> 00:10:04 icy crust which Flex open and closed as
00:10:04 --> 00:10:07 Jupiter's powerful tidal forces pull on
00:10:07 --> 00:10:10 the moon during its orbit interestingly
00:10:10 --> 00:10:12 europa's surface shows remarkably few
00:10:12 --> 00:10:14 impact craters which tells us something
00:10:14 --> 00:10:17 fascinating about its age while the moon
00:10:17 --> 00:10:19 itself formed around 4.5 billion years
00:10:20 --> 00:10:21 ago its surface appears to be
00:10:21 --> 00:10:24 surprisingly young somewhere between 20
00:10:24 --> 00:10:27 and 180 million years old this suggests
00:10:27 --> 00:10:29 that Europa is geologically active
00:10:29 --> 00:10:32 constantly renewing its icy exterior
00:10:32 --> 00:10:34 this virtual tour provides an excellent
00:10:34 --> 00:10:35 preview of what Europa Clipper might
00:10:35 --> 00:10:37 discover when it reaches its
00:10:37 --> 00:10:39 destination the portal is freely
00:10:39 --> 00:10:40 accessible to anyone interested in
00:10:41 --> 00:10:43 exploring this intriguing World offering
00:10:43 --> 00:10:45 both guided tours of europa's major
00:10:45 --> 00:10:47 landmarks and the freedom to investigate
00:10:48 --> 00:10:50 the moon's surface independently it's
00:10:50 --> 00:10:52 just one of many similar tools NASA
00:10:52 --> 00:10:54 offers for exploring various bodies
00:10:54 --> 00:10:56 throughout our solar system fascinating
00:10:57 --> 00:10:58 stuff and if you'd like to check it out
00:10:58 --> 00:11:01 I've included a link in the show
00:11:01 --> 00:11:04 notes that wraps up our coverage for
00:11:04 --> 00:11:06 today on astronomy daily if you'd like
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00:11:08 --> 00:11:10 developments in space and astronomy be
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00:11:36 --> 00:11:39 this has been Anna with astronomy daily
00:11:39 --> 00:11:40 thanks for joining me today as we
00:11:40 --> 00:11:42 explored the wonders of our universe
00:11:42 --> 00:11:50 together until next time keep looking up
00:11:50 --> 00:12:03 [Music]
00:12:03 --> 00:12:06 St