Join Anna in this episode of Astronomy Daily as she delves into a captivating array of astronomical discoveries that are reshaping our understanding of the universe. Prepare for an engaging exploration filled with groundbreaking insights and intriguing mysteries from the cosmos.
Highlights:
- Listening to the Music of Stars: Discover how astronomers have successfully listened to the resonances of a nearby star, HD 219134, revealing its age and size through the unique vibrations that make up its "stellar song." This breakthrough opens new avenues for understanding the life cycles of stars and their planets.
- A Busy Launch Schedule: Get the scoop on a thrilling week of space launches across three continents, including Australia's historic first sovereign orbital launch with Gilmour Space's ERIS rocket, and SpaceX's continued Starlink deployments.
- Mysterious Light Pulses Detected: Investigate the enigmatic light pulses observed in a SETI survey that have left astronomers puzzled. These peculiar signals from distant stars could hint at extraterrestrial activity, although no definitive explanations have been found yet.
- Dazzling Auroras on Jupiter: Marvel at the stunning views of Jupiter's auroras captured by the James Webb Space Telescope, which are hundreds of times brighter than Earth's northern lights, revealing new complexities in our understanding of planetary atmospheres.
- A Breakthrough in Theoretical Physics: Explore a revolutionary new theory from researchers in Finland that seeks to unify Einstein's gravity with quantum mechanics, potentially solving one of the greatest challenges in modern physics.
For more cosmic updates, visit our website at astronomydaily.io (http://www.astronomydaily.io/) . Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTubeMusic, TikTok, and our new Instagram account! Don’t forget to subscribe to the podcast on Apple Podcasts, Spotify, iHeartRadio, or wherever you get your podcasts.
Thank you for tuning in. This is Anna signing off. Until next time, keep looking up and stay curious about the wonders of our universe.
Chapters:
00:00 - Welcome to Astronomy Daily
01:10 - Listening to the music of stars
10:00 - This week's busy launch schedule
15:30 - Mysterious light pulses detected in SETI survey
20:00 - Jupiter's auroras captured by the James Webb Space Telescope
25:00 - Breakthrough in unifying gravity with quantum mechanics
✍️ Episode References
Stellar Resonance Study
[Astrophysical Journal]( https://iopscience.iop.org/journal/0004-637X (https://iopscience.iop.org/journal/0004-637X) )
Gilmour Space ERIS Launch
[Gilmour Space]( https://gilmourspace.com/ (https://gilmourspace.com/) )
SETI Survey Findings
[NASA]( https://www.nasa.gov/ (https://www.nasa.gov/) )
James Webb Telescope Observations
[NASA Webb]( https://webb.nasa.gov/ (https://webb.nasa.gov/) )
Unified Gravity Theory
[Aalto University]( https://www.aalto.fi/en (https://www.aalto.fi/en) )
Astronomy Daily
[Astronomy Daily]( http://www.astronomydaily.io/ (http://www.astronomydaily.io/) )
Become a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-exciting-space-discoveries-and-news--5648921/support (https://www.spreaker.com/podcast/astronomy-daily-exciting-space-discoveries-and-news--5648921/support?utm_source=rss&utm_medium=rss&utm_campaign=rss) .
Episode link: https://play.headliner.app/episode/27098125?utm_source=youtube
00:00:00 --> 00:00:02 Welcome to Astronomy Daily, your source
00:00:02 --> 00:00:04 for all the latest news from the cosmos.
00:00:04 --> 00:00:07 I'm your host, Anna, and today we're
00:00:07 --> 00:00:08 exploring an eclectic mix of
00:00:08 --> 00:00:10 astronomical discoveries and
00:00:10 --> 00:00:12 breakthroughs that are expanding our
00:00:12 --> 00:00:15 understanding of the universe around us.
00:00:15 --> 00:00:16 From scientists who have managed to
00:00:16 --> 00:00:19 listen to the music of stars to the
00:00:19 --> 00:00:21 James Webb Space Telescope capturing
00:00:21 --> 00:00:22 Jupiter's auroras glowing hundreds of
00:00:22 --> 00:00:24 times brighter than anything we see on
00:00:24 --> 00:00:27 Earth, we've got fascinating stories to
00:00:27 --> 00:00:28 share.
00:00:28 --> 00:00:30 We'll also dive into mysterious
00:00:30 --> 00:00:32 unexplained light pulses detected in a
00:00:32 --> 00:00:35 SETI survey, examine this week's busy
00:00:35 --> 00:00:37 launch schedule across three continents,
00:00:37 --> 00:00:39 and explore a revolutionary new theory
00:00:39 --> 00:00:41 that might finally bridge Einstein's
00:00:41 --> 00:00:43 gravity with quantum physics,
00:00:43 --> 00:00:45 potentially solving one of science's
00:00:45 --> 00:00:48 greatest puzzles. So, sit back and join
00:00:48 --> 00:00:49 me as we journey through the latest
00:00:50 --> 00:00:52 developments from the depths of space to
00:00:52 --> 00:00:54 the cutting edge of theoretical physics.
00:00:54 --> 00:00:58 Get comfortable and we'll get started.
00:00:58 --> 00:00:59 Astronomers have achieved something
00:00:59 --> 00:01:01 truly remarkable. They've managed to
00:01:01 --> 00:01:03 peer inside a nearby star by listening
00:01:03 --> 00:01:05 to its resonance. Using the same
00:01:06 --> 00:01:07 principle that helps geologists
00:01:07 --> 00:01:09 understand Earth's interior layers,
00:01:09 --> 00:01:11 scientists are now applying this
00:01:11 --> 00:01:13 technique to stars. A groundbreaking
00:01:13 --> 00:01:15 study published in the Astrophysical
00:01:15 --> 00:01:17 Journal reveals how researchers at the
00:01:17 --> 00:01:20 KEK Observatory in Hawaii trained their
00:01:20 --> 00:01:23 instruments on HD
00:01:23 --> 00:01:26 219, a cool orange star just 21
00:01:26 --> 00:01:29 light years from our solar system,
00:01:29 --> 00:01:31 practically our stellar neighbor. The
00:01:31 --> 00:01:33 vibrations of a star are like its unique
00:01:33 --> 00:01:35 song, explains lead author Yagwang Lee
00:01:35 --> 00:01:38 from the University of Hawaii at Monoa.
00:01:38 --> 00:01:40 By listening to those oscillations, we
00:01:40 --> 00:01:42 can precisely determine how massive a
00:01:42 --> 00:01:45 star is, how large it is, and how old it
00:01:45 --> 00:01:47 is. While stellar songs have been
00:01:47 --> 00:01:50 detected before using astroismology,
00:01:50 --> 00:01:51 they've typically only been recorded for
00:01:52 --> 00:01:54 very hot stars. Scientists previously
00:01:54 --> 00:01:56 thought the oscillations of smaller,
00:01:56 --> 00:01:58 cooler stars would be too subtle to
00:01:58 --> 00:02:01 detect until now.
00:02:01 --> 00:02:03 The KEK Planet Finder, an instrument
00:02:03 --> 00:02:05 usually employed to discover exoplanets,
00:02:05 --> 00:02:07 proved sensitive enough to measure the
00:02:07 --> 00:02:10 slight motions of HD
00:02:10 --> 00:02:14 219 surface. Over four consecutive
00:02:14 --> 00:02:16 nights, researchers collected more than
00:02:16 --> 00:02:18 2 precise velocity measurements from
00:02:18 --> 00:02:21 the star. What they discovered was
00:02:21 --> 00:02:24 astonishing. HD
00:02:24 --> 00:02:27 219 is approximately 10.2 billion
00:02:27 --> 00:02:29 years old, more than twice the age of
00:02:29 --> 00:02:31 our sun. This makes it one of the oldest
00:02:31 --> 00:02:34 stars ever aged using
00:02:34 --> 00:02:36 astrocismology. This breakthrough is
00:02:36 --> 00:02:37 particularly significant because
00:02:37 --> 00:02:39 traditional techniques for determining
00:02:39 --> 00:02:41 stellar ages don't work well as stars
00:02:41 --> 00:02:44 get older. One common method relies on
00:02:44 --> 00:02:46 measuring stellar spin as younger stars
00:02:46 --> 00:02:49 rotate faster. However, this slowdown
00:02:49 --> 00:02:51 becomes less pronounced over time,
00:02:51 --> 00:02:53 making it increasingly difficult to date
00:02:53 --> 00:02:56 elderly stars. The team also found that
00:02:56 --> 00:02:58 HD
00:02:58 --> 00:03:01 219 is about 4% smaller than
00:03:01 --> 00:03:02 previous measurements
00:03:02 --> 00:03:04 suggested. This discrepancy might
00:03:04 --> 00:03:06 indicate that cooler stars don't fit the
00:03:06 --> 00:03:08 same models used to estimate the size of
00:03:08 --> 00:03:11 hotter stars. This stellar music
00:03:11 --> 00:03:13 technique opens a new window into
00:03:13 --> 00:03:15 understanding the life cycles of stars
00:03:15 --> 00:03:17 and will help astronomers better
00:03:17 --> 00:03:19 characterize the at least five planets
00:03:19 --> 00:03:21 including two rocky worlds larger than
00:03:21 --> 00:03:25 Earth that orbit HD
00:03:25 --> 00:03:28 219. As researcher Lee puts it, this
00:03:28 --> 00:03:30 is like finding a longlost tuning fork
00:03:30 --> 00:03:32 for stellar clocks. It gives us a
00:03:32 --> 00:03:34 reference point to calibrate how stars
00:03:34 --> 00:03:37 spin down over billions of years.
00:03:37 --> 00:03:39 Let's take a look at this week's launch
00:03:39 --> 00:03:41 schedule with a very special event for
00:03:41 --> 00:03:43 our listeners down under on the
00:03:43 --> 00:03:46 schedule. Space launch activity is
00:03:46 --> 00:03:48 ramping up dramatically this week with
00:03:48 --> 00:03:50 rockets lifting off from five countries
00:03:50 --> 00:03:53 across three continents in what's
00:03:53 --> 00:03:55 shaping up to be an extraordinarily busy
00:03:55 --> 00:03:57 period for space exploration.
00:03:57 --> 00:03:59 Australia is preparing to make history
00:03:59 --> 00:04:02 with Gilmore Space, readying its Aerys
00:04:02 --> 00:04:04 orbital rocket for the country's first
00:04:04 --> 00:04:06 sovereign orbital launch from Bowen,
00:04:06 --> 00:04:10 Queensland. The 25 m tall Aerys vehicle
00:04:10 --> 00:04:12 uses hybrid propulsion technology and
00:04:12 --> 00:04:14 could make Australia just the latest
00:04:14 --> 00:04:17 member of the exclusive Club of Nations
00:04:17 --> 00:04:19 with indigenous orbital launch
00:04:19 --> 00:04:21 capabilities. It is hoped this inaugural
00:04:21 --> 00:04:23 launch will take place on Thursday, May
00:04:23 --> 00:04:26 15th, morning local time. Meanwhile,
00:04:26 --> 00:04:28 SpaceX continues its relentless cadence
00:04:28 --> 00:04:31 of Starlink deployments. The company has
00:04:31 --> 00:04:33 already conducted multiple Falcon 9
00:04:33 --> 00:04:35 launches this month with more planned
00:04:35 --> 00:04:37 from both Vandenberg in California and
00:04:37 --> 00:04:39 its Florida launch sites. One recent
00:04:39 --> 00:04:41 mission marked the 28th flight for a
00:04:41 --> 00:04:44 single booster. A remarkable achievement
00:04:44 --> 00:04:46 showcasing the company's reusability
00:04:46 --> 00:04:48 prowess as it pushes toward breaking its
00:04:48 --> 00:04:51 own record of 132 launches set just last
00:04:51 --> 00:04:55 year. In Asia, India's space research
00:04:55 --> 00:04:57 organization is preparing its PSLVXL
00:04:57 --> 00:05:00 rocket to launch the EOS9 Earth
00:05:00 --> 00:05:02 observation satellite from the SATS
00:05:02 --> 00:05:04 Dawan Space Center. This C-band
00:05:04 --> 00:05:06 synthetic aperture radar satellite, also
00:05:06 --> 00:05:09 known as RESAT 1B, will join India's
00:05:09 --> 00:05:11 growing constellation of Earth
00:05:11 --> 00:05:13 monitoring spacecraft. Not to be
00:05:13 --> 00:05:15 outdone, China has scheduled multiple
00:05:15 --> 00:05:17 missions from the Jukan satellite launch
00:05:17 --> 00:05:19 center, including a launch of their
00:05:19 --> 00:05:22 innovative Juk 2e rocket. This vehicle
00:05:22 --> 00:05:23 is particularly noteworthy as it's
00:05:23 --> 00:05:25 powered by liquid methane and liquid
00:05:25 --> 00:05:27 oxygen, making it among the first
00:05:27 --> 00:05:29 methane fueled launch vehicles to
00:05:29 --> 00:05:31 successfully reach orbit. Across the
00:05:31 --> 00:05:34 Tasmin Sea from Australia, Rocket Lab is
00:05:34 --> 00:05:36 readying an electron rocket at their
00:05:36 --> 00:05:38 private spaceport on New Zealand's Mahia
00:05:38 --> 00:05:40 Peninsula. Their mission, whimsically
00:05:40 --> 00:05:43 named the Sea God Seas, will deploy a
00:05:43 --> 00:05:45 synthetic aperture radar satellite for
00:05:45 --> 00:05:49 Japanese Earth imagery provider IQPS.
00:05:49 --> 00:05:51 This global surge in launch activity
00:05:51 --> 00:05:53 reflects the increasingly democratized
00:05:53 --> 00:05:55 access to space with both established
00:05:55 --> 00:05:57 space powers and emerging players
00:05:57 --> 00:05:59 contributing to a diverse ecosystem of
00:05:59 --> 00:06:02 launch vehicles and capabilities. From
00:06:02 --> 00:06:04 SpaceX's workhorse Falcon 9 to
00:06:04 --> 00:06:07 Australia's debut Aerys vehicle, the
00:06:07 --> 00:06:08 variety of rockets taking flight
00:06:08 --> 00:06:10 demonstrates how Space Access continues
00:06:10 --> 00:06:12 to evolve beyond the exclusive domain of
00:06:12 --> 00:06:15 just a few nations.
00:06:15 --> 00:06:16 Next up today, let's return to a
00:06:16 --> 00:06:18 favorite subject here on Astronomy
00:06:18 --> 00:06:20 Daily. In the vast expanse of our
00:06:20 --> 00:06:22 universe, the search for
00:06:22 --> 00:06:24 extraterrestrial intelligence continues
00:06:24 --> 00:06:27 to yield fascinating results, though not
00:06:27 --> 00:06:29 always the kind we expect. A recent
00:06:30 --> 00:06:31 multi-year survey has detected something
00:06:32 --> 00:06:33 truly puzzling that has astronomers
00:06:33 --> 00:06:36 scratching their heads. NASA veteran
00:06:36 --> 00:06:38 Richard Stanton has been conducting an
00:06:38 --> 00:06:40 optical SETI survey using a 30-in
00:06:40 --> 00:06:42 telescope at the Shea Meadow Observatory
00:06:42 --> 00:06:45 in Big Bear, California. Unlike
00:06:45 --> 00:06:47 traditional SETI efforts that focus on
00:06:47 --> 00:06:49 radio signals, Stanton's approach looks
00:06:49 --> 00:06:51 for unusual pulses of light that might
00:06:51 --> 00:06:53 indicate technological activity around
00:06:53 --> 00:06:57 distant stars. After observing more than
00:06:57 --> 00:07:00 1 sunlike stars over several years,
00:07:00 --> 00:07:02 Stanton detected something
00:07:02 --> 00:07:05 extraordinary. two fast identical pulses
00:07:05 --> 00:07:07 of light from HD
00:07:07 --> 00:07:11 89, an F-type star located about 100
00:07:11 --> 00:07:13 lighty years from Earth. What makes
00:07:13 --> 00:07:15 these pulses so intriguing is their
00:07:15 --> 00:07:17 peculiar pattern and timing. They were
00:07:17 --> 00:07:20 separated by exactly 4.4 seconds and
00:07:20 --> 00:07:22 showed nearly identical fine structure
00:07:22 --> 00:07:25 patterns within each pulse. The stars
00:07:25 --> 00:07:27 light briefly brightened, dimmed,
00:07:27 --> 00:07:28 brightened again, and then returned to
00:07:28 --> 00:07:30 normal. All within about 2/10 of a
00:07:30 --> 00:07:33 second. This pattern is far too strong
00:07:33 --> 00:07:35 and structured to be explained by random
00:07:35 --> 00:07:37 noise or atmospheric turbulence. As
00:07:37 --> 00:07:40 Stanton noted, how do you make a star
00:07:40 --> 00:07:42 over 1 million km across partially
00:07:42 --> 00:07:45 disappear in a tenth of a second? Even
00:07:45 --> 00:07:47 more compelling, when Stanton reviewed
00:07:47 --> 00:07:49 historical data, he discovered that
00:07:49 --> 00:07:51 similar paired pulses had been detected
00:07:51 --> 00:07:53 around HD
00:07:53 --> 00:07:57 217, better known as 51 Pegasai,
00:07:57 --> 00:08:01 back in 2021. This G-type star located
00:08:01 --> 00:08:03 about 50 lighty years away is notably
00:08:03 --> 00:08:06 the first sunlike star found to have an
00:08:06 --> 00:08:08 exoplanet orbiting it. Stanton has
00:08:08 --> 00:08:10 meticulously ruled out all the usual
00:08:10 --> 00:08:12 suspects. These signals don't match
00:08:12 --> 00:08:14 known patterns from satellites,
00:08:14 --> 00:08:16 airplanes, meteors, birds, or other
00:08:16 --> 00:08:19 common sources of false positives. No
00:08:19 --> 00:08:21 movement was detected near the stars
00:08:21 --> 00:08:23 during simultaneous photography. and
00:08:23 --> 00:08:25 background sensors designed to catch
00:08:25 --> 00:08:27 satellites moving close to target stars
00:08:27 --> 00:08:28 detected nothing
00:08:28 --> 00:08:31 unusual. Various natural explanations
00:08:31 --> 00:08:33 have been considered from atmospheric
00:08:33 --> 00:08:35 defraction caused by shock waves to
00:08:35 --> 00:08:37 partial eclipses by distant asteroids.
00:08:37 --> 00:08:39 Even more exotic possibilities like
00:08:39 --> 00:08:42 gravity waves have been examined. None
00:08:42 --> 00:08:43 provide a satisfactory explanation for
00:08:43 --> 00:08:45 the precise repeating nature of these
00:08:46 --> 00:08:48 pulses. This leaves open a tantalizing,
00:08:48 --> 00:08:51 if remote, possibility that these
00:08:51 --> 00:08:52 signals might have an intelligent
00:08:52 --> 00:08:55 origin. If so, Stanton suggests whatever
00:08:55 --> 00:08:57 modulated these stars light would need
00:08:57 --> 00:08:59 to be relatively close to Earth,
00:08:59 --> 00:09:01 implying potential ETI activity within
00:09:01 --> 00:09:03 our own solar system. But Stanton
00:09:04 --> 00:09:05 remains appropriately
00:09:05 --> 00:09:08 cautious. None of these explanations are
00:09:08 --> 00:09:10 really satisfying at this point. We
00:09:10 --> 00:09:11 don't know what kind of object could
00:09:11 --> 00:09:13 produce these pulses or how far away it
00:09:13 --> 00:09:16 is. Until we learn more, we can't even
00:09:16 --> 00:09:19 say whether or not extraterrestrials are
00:09:19 --> 00:09:21 involved. To further investigate this
00:09:21 --> 00:09:24 mystery, Stanton recommends using arrays
00:09:24 --> 00:09:26 of synchronized optical telescopes to
00:09:26 --> 00:09:28 gather more data. If an object is moving
00:09:28 --> 00:09:30 between us and these stars, this
00:09:30 --> 00:09:32 approach could reveal its speed, size,
00:09:32 --> 00:09:35 and distance. Observations from
00:09:35 --> 00:09:37 telescopes separated by hundreds of km
00:09:37 --> 00:09:39 might also help determine if the light
00:09:39 --> 00:09:40 variations originate from the stars
00:09:40 --> 00:09:43 themselves or from something closer to
00:09:43 --> 00:09:45 home. For now, these unexplained pulses
00:09:45 --> 00:09:47 join the growing list of astronomical
00:09:47 --> 00:09:49 curiosities that remind us how much we
00:09:49 --> 00:09:52 still have to learn about our cosmic
00:09:52 --> 00:09:54 neighborhood. The James Web Space
00:09:54 --> 00:09:56 Telescope has given us a Christmas gift
00:09:56 --> 00:09:58 that has astronomers absolutely
00:09:58 --> 00:10:00 mesmerized. Unprecedented views of
00:10:00 --> 00:10:02 Jupiter's auroras that make Earth's
00:10:02 --> 00:10:04 northern lights look like a dim
00:10:04 --> 00:10:06 flashlight by comparison. On Christmas
00:10:06 --> 00:10:07 Day
00:10:07 --> 00:10:11 2023, web captured glowing auroras
00:10:11 --> 00:10:13 adorning Jupiter's north pole that are
00:10:13 --> 00:10:15 hundreds of times brighter than anything
00:10:15 --> 00:10:18 we see on our home planet. What stunned
00:10:18 --> 00:10:21 scientists wasn't just the intensity,
00:10:21 --> 00:10:22 but the dynamic nature of these
00:10:22 --> 00:10:25 celestial light shows. Jonathan Nichols
00:10:25 --> 00:10:26 from the University of Leicester, who
00:10:26 --> 00:10:28 led the study, was completely takenback
00:10:28 --> 00:10:30 by what they observed. We wanted to see
00:10:30 --> 00:10:32 how quickly the auroras change,
00:10:32 --> 00:10:34 expecting them to fade in and out
00:10:34 --> 00:10:36 ponderously over 15 minutes or so.
00:10:36 --> 00:10:39 Instead, we observe the whole auroral
00:10:39 --> 00:10:41 region fizzing and popping with light,
00:10:41 --> 00:10:44 sometimes varying by the second.
00:10:44 --> 00:10:46 Jupiter's auroras form through processes
00:10:46 --> 00:10:49 both familiar and unique. Like Earth,
00:10:49 --> 00:10:51 charged particles from the sun's solar
00:10:51 --> 00:10:52 wind get funneled toward the poles by
00:10:52 --> 00:10:55 the planet's magnetic field. But Jupiter
00:10:55 --> 00:10:57 has an additional aurora factory.
00:10:57 --> 00:10:59 Particles ejected from volcanoes on its
00:10:59 --> 00:11:01 hellish moon Io undergo the same
00:11:01 --> 00:11:03 process, adding to the spectacular
00:11:03 --> 00:11:06 display. To capture these details,
00:11:06 --> 00:11:07 scientists used a double-barreled
00:11:07 --> 00:11:10 approach, combining web's near infrared
00:11:10 --> 00:11:12 camera with Hubble's ultraviolet
00:11:12 --> 00:11:15 sensors. This dual observation revealed
00:11:15 --> 00:11:17 something especially puzzling. As
00:11:17 --> 00:11:19 Nichols explained, bizarrely, the
00:11:20 --> 00:11:22 brightest light observed by web had no
00:11:22 --> 00:11:24 real counterpart in Hubble's pictures.
00:11:24 --> 00:11:27 This has left us scratching our heads.
00:11:27 --> 00:11:29 This discrepancy points to something
00:11:29 --> 00:11:31 previously thought impossible. A
00:11:31 --> 00:11:32 combination of high quantities of very
00:11:32 --> 00:11:35 low energy particles somehow reaching
00:11:35 --> 00:11:36 Jupiter's atmosphere in ways current
00:11:36 --> 00:11:39 models can't explain. The phenomenon is
00:11:39 --> 00:11:41 forcing scientists to reconsider our
00:11:41 --> 00:11:43 understanding of how particles interact
00:11:43 --> 00:11:46 with planetary atmospheres. The research
00:11:46 --> 00:11:47 team plans to continue studying
00:11:47 --> 00:11:50 Jupiter's auroras with both telescopes
00:11:50 --> 00:11:51 to better understand the mysterious
00:11:51 --> 00:11:53 particle combination reaching Jupiter's
00:11:53 --> 00:11:56 atmosphere. Their findings could reveal
00:11:56 --> 00:11:58 entirely new details about Jupiter's
00:11:58 --> 00:12:00 magnetosphere, the vast region of space
00:12:00 --> 00:12:02 around the planet influenced by its
00:12:02 --> 00:12:05 magnetic field. For now, Jupiter's
00:12:05 --> 00:12:07 dazzling light show represents yet
00:12:07 --> 00:12:09 another cosmic mystery waiting to be
00:12:09 --> 00:12:11 unraveled, showing that even within our
00:12:11 --> 00:12:13 own solar system, nature still has
00:12:14 --> 00:12:15 plenty of spectacular surprises that
00:12:16 --> 00:12:18 challenge our scientific
00:12:18 --> 00:12:20 understanding. Some exciting science
00:12:20 --> 00:12:22 news is next. I'll see if I can explain
00:12:22 --> 00:12:25 it so it makes some sort of sense. For
00:12:25 --> 00:12:27 decades, physicists have been searching
00:12:27 --> 00:12:30 for the holy grail of modern science, a
00:12:30 --> 00:12:32 unified theory that can bring together
00:12:32 --> 00:12:34 Einstein's theory of gravity with
00:12:34 --> 00:12:36 quantum mechanics. These two pillars of
00:12:36 --> 00:12:38 physics have stubbornly refused to
00:12:38 --> 00:12:40 reconcile, creating what many consider
00:12:40 --> 00:12:42 the most significant unsolved problem in
00:12:42 --> 00:12:45 theoretical physics. Now, researchers
00:12:45 --> 00:12:47 from Finland's Alto University may have
00:12:47 --> 00:12:49 made a crucial breakthrough. Miko
00:12:49 --> 00:12:51 Partanan and Yuca Tulki have developed
00:12:51 --> 00:12:54 what they call unified gravity, a
00:12:54 --> 00:12:55 groundbreaking approach that could
00:12:55 --> 00:12:58 finally bridge this theoretical divide.
00:12:58 --> 00:13:00 Their work, recently published in
00:13:00 --> 00:13:02 reports on progress in physics, takes a
00:13:02 --> 00:13:05 novel approach to a century old problem.
00:13:05 --> 00:13:07 The fundamental challenge has always
00:13:07 --> 00:13:09 been one of mathematical language. The
00:13:09 --> 00:13:12 standard model of particle physics which
00:13:12 --> 00:13:14 describes the electromagnetic weak and
00:13:14 --> 00:13:17 strong forces uses a framework called
00:13:17 --> 00:13:20 quantum field theory. Gravity on the
00:13:20 --> 00:13:22 other hand is described by Einstein's
00:13:22 --> 00:13:24 general relativity which views gravity
00:13:24 --> 00:13:27 as the curvature of spaceime itself.
00:13:27 --> 00:13:28 This clash between the internal
00:13:28 --> 00:13:30 symmetries of quantum fields and the
00:13:30 --> 00:13:32 external symmetries of spaceime has made
00:13:32 --> 00:13:35 gravity extremely difficult to fit into
00:13:35 --> 00:13:37 the quantum framework. As partan
00:13:37 --> 00:13:40 explains, their innovative solution
00:13:40 --> 00:13:42 introduces an 8 component spinorial
00:13:42 --> 00:13:45 representation of quantum fields and a
00:13:45 --> 00:13:47 space-time dimension field that allows
00:13:47 --> 00:13:48 them to extract familiar
00:13:48 --> 00:13:50 four-dimensional space-time quantities
00:13:50 --> 00:13:53 from an eight-dimensional spinor space.
00:13:53 --> 00:13:55 This mathematical slight of hand enables
00:13:55 --> 00:13:58 them to treat gravity using compact
00:13:58 --> 00:14:01 finite dimensional unitary symmetries,
00:14:01 --> 00:14:02 the same kind used in the standard
00:14:02 --> 00:14:05 model. What makes this approach
00:14:05 --> 00:14:07 particularly promising is that it allows
00:14:07 --> 00:14:09 gravity to be represented in flat
00:14:09 --> 00:14:12 spaceime using the manowski metric
00:14:12 --> 00:14:14 without requiring the curved spaceime of
00:14:14 --> 00:14:15 general
00:14:15 --> 00:14:18 relativity. This makes it possible to
00:14:18 --> 00:14:20 write gravity in the same mathematical
00:14:20 --> 00:14:26 form as the other fundamental forces.
00:14:26 --> 00:14:29 Partiners have gone beyond just
00:14:29 --> 00:14:31 theoretical formulations. They've
00:14:31 --> 00:14:33 derived Fineman rules for unified
00:14:33 --> 00:14:35 gravity, essentially the mathematical
00:14:35 --> 00:14:37 instructions used to calculate how
00:14:37 --> 00:14:39 particles interact in quantum field
00:14:39 --> 00:14:42 theory. Their analysis suggests that all
00:14:42 --> 00:14:44 infinities in the equations could be
00:14:44 --> 00:14:46 absorbed into a small number of
00:14:46 --> 00:14:48 redefined parameters, suggesting the
00:14:48 --> 00:14:49 theory could be
00:14:49 --> 00:14:52 reormalizable, a critical feature that
00:14:52 --> 00:14:53 previous quantum gravity theories have
00:14:54 --> 00:14:56 struggled to achieve. If proven correct,
00:14:56 --> 00:14:58 unified gravity would have profound
00:14:58 --> 00:15:01 implications. It could provide tools to
00:15:01 --> 00:15:03 explore the universe's most extreme
00:15:03 --> 00:15:05 environments where both quantum effects
00:15:05 --> 00:15:08 and gravity matter, the interiors of
00:15:08 --> 00:15:10 black holes, and the moment of the big
00:15:10 --> 00:15:11 bang
00:15:11 --> 00:15:13 itself. Without a quantum theory of
00:15:13 --> 00:15:15 gravity, we can't fully describe what
00:15:15 --> 00:15:17 happens at high energies, where space
00:15:17 --> 00:15:19 and time behave very differently, says
00:15:19 --> 00:15:22 Partanan. Their theory might eventually
00:15:22 --> 00:15:23 answer fundamental questions about why
00:15:24 --> 00:15:25 there's more matter than antimatter in
00:15:26 --> 00:15:28 the universe or how spacetime behaved in
00:15:28 --> 00:15:31 the earliest moments of existence. While
00:15:31 --> 00:15:33 the theory still needs to be proven at
00:15:33 --> 00:15:35 higher orders of quantum correction, the
00:15:35 --> 00:15:37 researchers are optimistic that unified
00:15:37 --> 00:15:39 gravity could do for 21st century
00:15:39 --> 00:15:41 physics, what Einstein's general
00:15:42 --> 00:15:44 relativity did a century ago, open
00:15:44 --> 00:15:46 entirely new frontiers of understanding
00:15:46 --> 00:15:49 and technological possibility.
00:15:49 --> 00:15:51 Phew, how'd I go? Hopefully that all
00:15:51 --> 00:15:54 made sense. On that note, then we'll
00:15:54 --> 00:15:56 wrap up today's journey through the
00:15:56 --> 00:15:58 cosmos. From listening to the music of
00:15:58 --> 00:16:00 stars and tracking this week's busy
00:16:00 --> 00:16:03 launch schedule to unexplained pulses of
00:16:03 --> 00:16:04 light that have SETI researchers
00:16:04 --> 00:16:08 puzzled, Jupiter's spectacular auroras,
00:16:08 --> 00:16:10 and a potential breakthrough in unifying
00:16:10 --> 00:16:12 physics greatest theories. We've covered
00:16:12 --> 00:16:14 quite a bit of ground among the stars.
00:16:14 --> 00:16:16 I'm Anna. Thanks for joining me on
00:16:16 --> 00:16:17 Astronomy Daily. If you'd like to stay
00:16:17 --> 00:16:20 updated on these stories and more, visit
00:16:20 --> 00:16:21 our website at
00:16:21 --> 00:16:23 astronomydaily.io where you can sign up
00:16:23 --> 00:16:25 for our free daily newsletter and catch
00:16:25 --> 00:16:27 up on all the latest space and astronomy
00:16:27 --> 00:16:29 news with our constantly updating news
00:16:29 --> 00:16:31 feed. And don't forget to follow us on
00:16:31 --> 00:16:33 social media. Just search for Astro
00:16:33 --> 00:16:35 Daily Pod on Facebook X, YouTube,
00:16:35 --> 00:16:37 YouTube Music, Instagram, Tumblr, and
00:16:37 --> 00:16:39 Tik Tok. We'd love to continue the
00:16:40 --> 00:16:41 conversation about today's fascinating
00:16:41 --> 00:16:44 topics with you there. Until next time,
00:16:44 --> 00:16:47 keep looking up.
00:16:47 --> 00:16:51 day. Stories we told.