In this episode of Astronomy Daily, join host Anna as she guides you through a captivating exploration of our universe's latest advancements and celestial events. From ambitious lunar projects to groundbreaking detection technologies, this episode promises to ignite your curiosity about the cosmos.
Highlights:
- China's Lunar Nuclear Power Plant: Discover China's bold plans to establish a nuclear power plant on the Moon in collaboration with Russia. This initiative aims to support the International Lunar Research Station and pave the way for a permanent human presence on our lunar neighbor, addressing the challenges of long-term operations in space.
- Revolutionary Exoplanet Detection Technology: Learn about a groundbreaking coronagraph developed by researchers at the University of Arizona that could transform our ability to detect exoplanets by dimming the overpowering light from their parent stars. This innovation may help us locate Earth-like planets in habitable zones and search for signs of life beyond our solar system.
- Mini Planet Parade on April 24: Mark your calendars for a stunning celestial event! A mini planet parade featuring Mercury, Venus, Saturn, Neptune, and our Moon will grace the pre-dawn sky on April 24. Get tips on how to spot this rare alignment and capture breathtaking photographs of the cosmic display.
- Asteroid Vesta's Opposition: Get ready for a special viewing opportunity as asteroid Vesta reaches opposition on May 2, becoming visible even to the naked eye. Learn about Vesta's unique characteristics and its significance in our solar system's history.
- Celebrating Hubble's 35th Anniversary: Join us in commemorating the Hubble Space Telescope's 35 years in orbit. We'll reflect on its remarkable contributions to astronomy, including groundbreaking discoveries and stunning images that have shaped our understanding of the universe.
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.
00:00 - Welcome to Astronomy Daily
01:05 - China's lunar nuclear power plant
10:30 - Revolutionary exoplanet detection technology
17:00 - Mini planet parade on April 24
22:15 - Asteroid Vesta's opposition
27:30 - Celebrating Hubble's 35th anniversary
✍️ Episode References
China's Lunar Plans
[China National Space Administration]( http://www.cnsa.gov.cn/ (http://www.cnsa.gov.cn/) )
Exoplanet Detection Technology
[University of Arizona]( https://www.arizona.edu/ (https://www.arizona.edu/) )
Mini Planet Parade Details
[Astronomy Magazine]( https://www.astronomy.com/ (https://www.astronomy.com/) )
Asteroid Vesta Information
[NASA Dawn Mission]( https://www.nasa.gov/mission_pages/dawn/main/index.html (https://www.nasa.gov/mission_pages/dawn/main/index.html) )
Hubble Space Telescope Milestones
[NASA Hubble]( https://www.nasa.gov/hubble (https://www.nasa.gov/hubble) )
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/26772570?utm_source=youtube
00:00:00 --> 00:00:02 Welcome to Astronomy Daily. I'm your
00:00:02 --> 00:00:04 host, Anna. Thanks for joining me today
00:00:04 --> 00:00:06 as we explore the fascinating world
00:00:06 --> 00:00:09 beyond our atmosphere. Today's cosmic
00:00:09 --> 00:00:11 journey takes us from the moon to the
00:00:11 --> 00:00:13 far reaches of space as we dive into
00:00:13 --> 00:00:15 some truly remarkable developments in
00:00:15 --> 00:00:17 astronomy and space exploration. We'll
00:00:17 --> 00:00:19 be starting close to home with China's
00:00:19 --> 00:00:21 ambitious plans to construct a nuclear
00:00:21 --> 00:00:23 power plant on the lunar surface in
00:00:23 --> 00:00:25 collaboration with Russia, a bold step
00:00:25 --> 00:00:27 toward establishing a permanent human
00:00:27 --> 00:00:29 presence on our celestial neighbor. Then
00:00:29 --> 00:00:31 we'll examine a groundbreaking new
00:00:31 --> 00:00:33 technology from researchers at the
00:00:33 --> 00:00:35 University of Arizona that could
00:00:35 --> 00:00:37 revolutionize our ability to detect
00:00:37 --> 00:00:39 exoplanets by effectively dimming the
00:00:39 --> 00:00:41 overwhelming light of their parent
00:00:41 --> 00:00:43 stars. This coronagraph breakthrough
00:00:43 --> 00:00:45 might just help us find Earthlike
00:00:45 --> 00:00:47 planets in habitable zones and
00:00:47 --> 00:00:50 potentially signs of life. If you're an
00:00:50 --> 00:00:52 early riser, you're in for a treat this
00:00:52 --> 00:00:54 week. We'll tell you about a mini planet
00:00:54 --> 00:00:56 parade happening on April 24th when
00:00:56 --> 00:01:00 Mercury, Venus, Saturn, Neptune, and our
00:01:00 --> 00:01:01 moon will cluster together in the
00:01:01 --> 00:01:04 pre-dawn sky, creating a spectacular
00:01:04 --> 00:01:07 viewing opportunity for amateur
00:01:07 --> 00:01:08 astronomers and stargazers. We have
00:01:08 --> 00:01:10 exciting news about asteroid Vesta,
00:01:10 --> 00:01:13 which reaches opposition on May 2nd.
00:01:13 --> 00:01:15 hand. This ancient protolanet will be
00:01:15 --> 00:01:17 visible even to the naked eye under the
00:01:17 --> 00:01:19 right conditions with a special viewing
00:01:19 --> 00:01:21 opportunity coming up when it forms a
00:01:21 --> 00:01:23 temporary double star with another
00:01:23 --> 00:01:25 celestial object. Finally, we'll
00:01:25 --> 00:01:27 celebrate a major milestone as the
00:01:27 --> 00:01:29 Hubble Space Telescope marks its 35th
00:01:29 --> 00:01:31 year in orbit. We'll look back at how
00:01:32 --> 00:01:33 this remarkable instrument has
00:01:33 --> 00:01:34 transformed our understanding of the
00:01:34 --> 00:01:36 universe and continues to make
00:01:36 --> 00:01:38 groundbreaking discoveries after more
00:01:38 --> 00:01:41 than three decades. So settle in as we
00:01:41 --> 00:01:43 journey through these cosmic wonders and
00:01:43 --> 00:01:44 explore the latest developments in our
00:01:44 --> 00:01:47 ongoing quest to understand the
00:01:47 --> 00:01:49 universe. In what can only be described
00:01:49 --> 00:01:51 as one of the most ambitious lunar
00:01:51 --> 00:01:54 projects since the Apollo era, China has
00:01:54 --> 00:01:56 revealed plans to develop a nuclear
00:01:56 --> 00:01:58 power plant on the moon. This
00:01:58 --> 00:02:00 extraordinary undertaking would support
00:02:00 --> 00:02:01 the International Lunar Research
00:02:02 --> 00:02:04 Station, a collaborative effort between
00:02:04 --> 00:02:07 China and Russia aimed at establishing a
00:02:07 --> 00:02:09 sustained human presence on our nearest
00:02:09 --> 00:02:12 celestial neighbor. The announcement
00:02:12 --> 00:02:14 came during a presentation by a senior
00:02:14 --> 00:02:16 Chinese space official just last week,
00:02:16 --> 00:02:18 highlighting the serious intentions
00:02:18 --> 00:02:20 behind what might otherwise sound like
00:02:20 --> 00:02:23 science fiction. This nuclear facility
00:02:23 --> 00:02:25 would provide the consistent power
00:02:25 --> 00:02:27 needed for long-term lunar operations,
00:02:27 --> 00:02:29 addressing one of the fundamental
00:02:29 --> 00:02:31 challenges of maintaining a permanent
00:02:31 --> 00:02:34 outpost so far from Earth. The timeline
00:02:34 --> 00:02:36 for this lunar endeavor centers around
00:02:36 --> 00:02:39 the Changi 8 mission scheduled for 2028.
00:02:40 --> 00:02:41 This mission will serve as the
00:02:41 --> 00:02:43 foundation for what China hopes will
00:02:43 --> 00:02:45 become a permanent manned lunar base by
00:02:46 --> 00:02:49 2035. The preliminary plans also include
00:02:49 --> 00:02:52 implementing large-scale solar arrays
00:02:52 --> 00:02:53 alongside an intricate network of
00:02:54 --> 00:02:56 pipelines and cables built across the
00:02:56 --> 00:02:58 lunar surface to distribute heat and
00:02:58 --> 00:03:00 electricity to the various components of
00:03:00 --> 00:03:03 the research station. What makes this
00:03:03 --> 00:03:05 particularly interesting is how China's
00:03:05 --> 00:03:07 lunar ambitions mirror the timeline of
00:03:07 --> 00:03:10 NASA's own Aremis program, which aims to
00:03:10 --> 00:03:12 return American astronauts to the moon
00:03:12 --> 00:03:14 by 2027.
00:03:14 --> 00:03:17 We appear to be entering a new era of
00:03:17 --> 00:03:19 lunar exploration and possibly
00:03:19 --> 00:03:21 settlement, reminiscent of the space
00:03:21 --> 00:03:23 race of the 1960s, but with more
00:03:23 --> 00:03:25 emphasis on establishing long-term
00:03:25 --> 00:03:27 infrastructure rather than simply
00:03:27 --> 00:03:30 planting flags. The China Russia
00:03:30 --> 00:03:32 collaboration is especially notable
00:03:32 --> 00:03:34 given the current geopolitical
00:03:34 --> 00:03:37 landscape. Recent Western sanctions have
00:03:37 --> 00:03:39 significantly limited Russia's access to
00:03:39 --> 00:03:41 space technology, making this
00:03:41 --> 00:03:43 partnership strategically valuable for
00:03:43 --> 00:03:46 both nations. For Russia, it provides
00:03:46 --> 00:03:48 continued involvement in cuttingedge
00:03:48 --> 00:03:50 space exploration, while China gains
00:03:50 --> 00:03:52 access to Russia's decades of experience
00:03:52 --> 00:03:55 in space operations and technology.
00:03:55 --> 00:03:57 Building a nuclear power plant on the
00:03:57 --> 00:03:58 moon presents enormous engineering
00:03:58 --> 00:04:00 challenges.
00:04:00 --> 00:04:01 The facility would need to withstand
00:04:02 --> 00:04:04 extreme temperature variations,
00:04:04 --> 00:04:06 radiation exposure, and the
00:04:06 --> 00:04:08 complications of lunar dust, not to
00:04:08 --> 00:04:10 mention the logistical hurdles of
00:04:10 --> 00:04:11 transporting construction materials and
00:04:11 --> 00:04:15 equipment 238 m from Earth. Yet, the
00:04:15 --> 00:04:17 advantages are equally significant.
00:04:17 --> 00:04:19 Nuclear power offers the high energy
00:04:20 --> 00:04:22 density and reliability needed for a
00:04:22 --> 00:04:24 permanent lunar base without the
00:04:24 --> 00:04:25 limitations of solar power during the
00:04:25 --> 00:04:29 twoe lunar nights. If successful, this
00:04:29 --> 00:04:30 endeavor could fundamentally alter
00:04:30 --> 00:04:33 humanity's relationship with our nearest
00:04:33 --> 00:04:35 celestial neighbor, transforming the
00:04:35 --> 00:04:37 moon from a destination for brief visits
00:04:37 --> 00:04:39 to a place where people may one day live
00:04:39 --> 00:04:42 and work for extended periods. It also
00:04:42 --> 00:04:44 raises fascinating questions about
00:04:44 --> 00:04:47 international cooperation, competition,
00:04:47 --> 00:04:49 and the potential commercialization of
00:04:49 --> 00:04:52 lunar resources in the decades ahead.
00:04:52 --> 00:04:55 Next up today, imagine being able to see
00:04:55 --> 00:04:57 a planet a billion times dimmer than its
00:04:57 --> 00:05:00 star. It sounds impossible, right? Well,
00:05:00 --> 00:05:02 researchers at the University of Arizona
00:05:02 --> 00:05:05 have developed a breakthrough technology
00:05:05 --> 00:05:07 that might just make this seemingly
00:05:07 --> 00:05:09 impossible feat a reality. Their
00:05:09 --> 00:05:11 innovative coronagraph design could
00:05:11 --> 00:05:13 revolutionize how we detect exoplanets
00:05:13 --> 00:05:14 by effectively turning down the
00:05:14 --> 00:05:16 overwhelming brightness of their parent
00:05:16 --> 00:05:19 stars. Lead researcher Nico Dashler
00:05:19 --> 00:05:21 explained the fundamental challenge.
00:05:21 --> 00:05:24 Earthlike planets in the habitable zone
00:05:24 --> 00:05:26 can easily be up to a billion times
00:05:26 --> 00:05:28 dimmer than their host
00:05:28 --> 00:05:31 star. This extreme brightness difference
00:05:31 --> 00:05:33 has been a persistent obstacle in our
00:05:33 --> 00:05:35 quest to directly observe potentially
00:05:35 --> 00:05:38 habitable worlds. When a planet is so
00:05:38 --> 00:05:40 drastically outshined, it's like trying
00:05:40 --> 00:05:42 to spot a firefly next to a stadium
00:05:42 --> 00:05:45 flood light. The team's solution
00:05:45 --> 00:05:47 published in the journal Optica is
00:05:47 --> 00:05:50 remarkably elegant. Their coronagraph
00:05:50 --> 00:05:52 essentially siphons away the starlight
00:05:52 --> 00:05:54 that would normally overwhelm the faint
00:05:54 --> 00:05:57 light from nearby exoplanets. What makes
00:05:57 --> 00:05:59 this approach particularly exciting is
00:05:59 --> 00:06:01 that it can reach what scientists call
00:06:01 --> 00:06:03 quantum optical limits for exoplanet
00:06:03 --> 00:06:05 detection, pushing the boundaries of
00:06:05 --> 00:06:08 what we previously thought possible. In
00:06:08 --> 00:06:09 laboratory testing, the team
00:06:09 --> 00:06:11 demonstrated that their system could
00:06:11 --> 00:06:13 identify the positions of synthetic
00:06:13 --> 00:06:15 exoplanets much closer to their
00:06:15 --> 00:06:17 artificial host stars than standard
00:06:17 --> 00:06:19 resolution limits would normally allow.
00:06:19 --> 00:06:22 This capability is critical because the
00:06:22 --> 00:06:24 most interesting planets, those
00:06:24 --> 00:06:26 potentially capable of supporting life,
00:06:26 --> 00:06:28 tend to orbit in close proximity to
00:06:28 --> 00:06:30 their stars. The technology relies on
00:06:30 --> 00:06:32 what scientists call spatial mode
00:06:32 --> 00:06:34 sorting. Think of light from different
00:06:34 --> 00:06:37 sources in space as creating distinct
00:06:37 --> 00:06:39 patterns similar to different notes on a
00:06:39 --> 00:06:41 piano. The coronagraph uses a mode
00:06:41 --> 00:06:43 sorter to filter out the overwhelming
00:06:43 --> 00:06:45 starlight, followed by an inverse mode
00:06:45 --> 00:06:47 sorter to reconstruct the image,
00:06:47 --> 00:06:49 allowing the exoplanet's light to emerge
00:06:49 --> 00:06:52 with remarkable clarity. What separates
00:06:52 --> 00:06:53 this approach from other detection
00:06:53 --> 00:06:55 methods is that it captures direct
00:06:55 --> 00:06:58 images rather than inferring a planet's
00:06:58 --> 00:07:01 existence through indirect means. Our
00:07:01 --> 00:07:02 coronagraph directly captures an image
00:07:02 --> 00:07:05 of the exoplanet. Desler noted images
00:07:05 --> 00:07:07 can provide context and composition
00:07:07 --> 00:07:09 information that can be used to
00:07:09 --> 00:07:11 determine exoplanet orbits and identify
00:07:11 --> 00:07:13 other objects that scatter light from a
00:07:13 --> 00:07:16 star. To validate their concept, the
00:07:16 --> 00:07:18 researchers constructed a laboratory
00:07:18 --> 00:07:21 setup mimicking a star exoplanet system
00:07:21 --> 00:07:25 with a 1,00 to1 brightness contrast. By
00:07:25 --> 00:07:26 simulating the planet's orbit and
00:07:26 --> 00:07:28 capturing images frame by frame, they
00:07:28 --> 00:07:30 were able to pinpoint its position at
00:07:30 --> 00:07:32 separations previously considered
00:07:32 --> 00:07:35 impossible to resolve. The implications
00:07:35 --> 00:07:37 of this technology extend far beyond
00:07:37 --> 00:07:39 just finding planets. If this
00:07:39 --> 00:07:41 coronagraph can be refined and scaled up
00:07:41 --> 00:07:44 for astronomical observatories, it could
00:07:44 --> 00:07:46 potentially allow scientists to analyze
00:07:46 --> 00:07:49 the atmospheres of Earthlike exoplanets,
00:07:49 --> 00:07:51 for bio signatures, chemical indicators
00:07:51 --> 00:07:53 that might reveal the presence of life
00:07:53 --> 00:07:56 beyond our solar system. The timing
00:07:56 --> 00:07:57 couldn't be better as NASA has
00:07:57 --> 00:08:00 prioritized exoplanet discovery with its
00:08:00 --> 00:08:02 planned habitable worlds observatory.
00:08:02 --> 00:08:04 This next generation space telescope
00:08:04 --> 00:08:06 will specifically target potentially
00:08:06 --> 00:08:08 habitable exoplanets and technologies
00:08:08 --> 00:08:10 like this advanced coronagraph could be
00:08:10 --> 00:08:12 instrumental to its success. The
00:08:12 --> 00:08:14 research team is now working to refine
00:08:14 --> 00:08:17 their spatial mode sorter to reduce what
00:08:17 --> 00:08:19 they call optical cross talk essentially
00:08:19 --> 00:08:21 light leakage between channels that can
00:08:21 --> 00:08:24 contaminate the results. While
00:08:24 --> 00:08:26 manageable in moderate contrast
00:08:26 --> 00:08:28 scenarios, the extreme brightness
00:08:28 --> 00:08:30 differences in exoplanet studies demand
00:08:30 --> 00:08:33 exceptional light isolation. Beyond
00:08:33 --> 00:08:35 astronomy, the techniques developed for
00:08:35 --> 00:08:37 this coronagraph could have applications
00:08:37 --> 00:08:39 in other fields like quantum sensing,
00:08:39 --> 00:08:42 communications, and advanced imaging.
00:08:42 --> 00:08:44 It's yet another example of how the
00:08:44 --> 00:08:47 quest to explore other worlds drives
00:08:47 --> 00:08:49 innovation that benefits multiple
00:08:50 --> 00:08:52 scientific disciplines.
00:08:52 --> 00:08:55 Early birds, mark your calendars. An
00:08:55 --> 00:08:57 exceptional celestial event is about to
00:08:57 --> 00:08:59 grace our pre-dawn skies on April 24th
00:09:00 --> 00:09:01 when a striking mini planetary parade
00:09:02 --> 00:09:04 will unfold, featuring Mercury, Venus,
00:09:04 --> 00:09:06 Saturn, Neptune, and Earth's moon, all
00:09:06 --> 00:09:07 clustering in the same region of the
00:09:08 --> 00:09:10 sky. This cosmic alignment offers a rare
00:09:10 --> 00:09:12 and beautiful photo opportunity for
00:09:12 --> 00:09:14 astronomy enthusiasts and early risers
00:09:14 --> 00:09:16 alike. What makes these planetary
00:09:16 --> 00:09:18 alignments so fascinating is the
00:09:18 --> 00:09:20 illusion they create, though separated
00:09:20 --> 00:09:22 by hundreds of millions of miles in
00:09:22 --> 00:09:25 space, their orbital positions will
00:09:25 --> 00:09:27 temporarily align from our earthly
00:09:27 --> 00:09:29 perspective, making them appear
00:09:29 --> 00:09:32 remarkably close together in our sky. To
00:09:32 --> 00:09:34 witness this celestial gathering, you'll
00:09:34 --> 00:09:36 need to set your alarm clock early. Look
00:09:36 --> 00:09:39 toward the eastern horizon around 5:15
00:09:39 --> 00:09:41 a.m. local time, where you'll first spot
00:09:41 --> 00:09:44 the moon as a thin, waning crescent,
00:09:44 --> 00:09:47 approaching its new moon phase that will
00:09:47 --> 00:09:49 arrive on April 27th. Its delicate,
00:09:49 --> 00:09:51 slender form will be hovering low on the
00:09:51 --> 00:09:53 horizon, creating a stunning visual
00:09:53 --> 00:09:55 anchor for the planetary
00:09:55 --> 00:09:57 procession. Directly to the left of the
00:09:57 --> 00:09:59 moon, you'll find Venus shining
00:09:59 --> 00:10:02 brilliantly as our current morning star.
00:10:02 --> 00:10:03 Venus has recently transitioned to
00:10:03 --> 00:10:05 morning visibility following its
00:10:05 --> 00:10:08 inferior solar conjunction on March 23rd
00:10:08 --> 00:10:09 when it passed between Earth and the
00:10:10 --> 00:10:12 Sun, ending its appearance in our
00:10:12 --> 00:10:15 evening skies. Saturn can be located by
00:10:15 --> 00:10:16 looking slightly down and to the right
00:10:16 --> 00:10:19 of Venus. The ringed planet will appear
00:10:19 --> 00:10:22 as a steady yellowish point of light.
00:10:22 --> 00:10:24 Mercury will be the last of the easily
00:10:24 --> 00:10:27 visible planets to rise, requiring a
00:10:27 --> 00:10:29 clear, unobstructed eastern horizon to
00:10:29 --> 00:10:31 be spotted before sunrise. swallows it
00:10:32 --> 00:10:35 in growing daylight. Neptune, the most
00:10:35 --> 00:10:37 distant world in this cosmic lineup,
00:10:37 --> 00:10:39 will be nestled in the center of this
00:10:39 --> 00:10:41 planetary triangle. However, at
00:10:41 --> 00:10:45 magnitude 7.9, this ice giant will
00:10:45 --> 00:10:47 remain invisible to the naked eye. Those
00:10:48 --> 00:10:50 hoping to glimpse Neptune's pale blue
00:10:50 --> 00:10:52 green disc will need a telescope or
00:10:52 --> 00:10:54 powerful binoculars.
00:10:54 --> 00:10:56 This April alignment follows February's
00:10:56 --> 00:10:59 more expansive planetary parade, which
00:10:59 --> 00:11:01 featured all five of our solar systems
00:11:01 --> 00:11:04 brightest planets, Venus, Jupiter, Mars,
00:11:04 --> 00:11:07 Saturn, and Mercury, plus the ice giants
00:11:07 --> 00:11:09 Neptune and Uranus. While this week's
00:11:09 --> 00:11:12 gathering is more modest in scale, the
00:11:12 --> 00:11:13 addition of the waning crescent moon
00:11:13 --> 00:11:15 adds a particularly photogenic element
00:11:15 --> 00:11:18 that photographers won't want to miss.
00:11:18 --> 00:11:19 If you're planning to capture this
00:11:19 --> 00:11:21 celestial event, be sure to scout a
00:11:21 --> 00:11:24 location with a clear eastern horizon,
00:11:24 --> 00:11:26 free from obstructions and light
00:11:26 --> 00:11:28 pollution. Remember that observing
00:11:28 --> 00:11:30 objects near the horizon often requires
00:11:30 --> 00:11:33 patience as atmospheric conditions can
00:11:33 --> 00:11:36 affect visibility. And always exercise
00:11:36 --> 00:11:38 caution when viewing celestial objects
00:11:38 --> 00:11:41 near sunrise. Never look directly at the
00:11:41 --> 00:11:44 sun without proper solar filters.
00:11:44 --> 00:11:46 This mini planetary parade is just one
00:11:46 --> 00:11:48 of many astronomical treats visible this
00:11:48 --> 00:11:51 northern spring, offering a perfect
00:11:51 --> 00:11:52 opportunity to connect with our cosmic
00:11:52 --> 00:11:55 neighborhood before dawn breaks on an
00:11:55 --> 00:11:57 ordinary Wednesday that will briefly
00:11:57 --> 00:11:58 become extraordinary for those who know
00:11:58 --> 00:11:59 where to
00:11:59 --> 00:12:02 look. And while you're in the mood to be
00:12:02 --> 00:12:04 looking up, here's another treat for
00:12:04 --> 00:12:07 you. While most asteroids remain dim
00:12:07 --> 00:12:09 specs visible only through telescopes,
00:12:09 --> 00:12:12 Asteroid Vesta is quite the celestial
00:12:12 --> 00:12:14 standout. Reaching opposition on May
00:12:14 --> 00:12:17 2nd, Vesta will achieve peak brightness,
00:12:17 --> 00:12:19 becoming visible even to the naked eye
00:12:19 --> 00:12:21 if you're observing from a dark sky
00:12:21 --> 00:12:24 location. This remarkable visibility
00:12:24 --> 00:12:27 isn't just a coincidence. Vesta occupies
00:12:27 --> 00:12:29 a unique position in our solar system as
00:12:29 --> 00:12:31 both asteroid and protolanet. NASA's
00:12:32 --> 00:12:34 Dawn mission, which orbited Vesta for 14
00:12:34 --> 00:12:37 months between 2011 and 2012, revealed
00:12:37 --> 00:12:39 fascinating details about this enigmatic
00:12:39 --> 00:12:41 world. Its surface contains highly
00:12:41 --> 00:12:43 reflective basaltic rock alongside
00:12:43 --> 00:12:45 darker carbonatous material delivered by
00:12:45 --> 00:12:48 meteorite impacts. What makes Vesta
00:12:48 --> 00:12:50 truly special is its unusual brightness,
00:12:50 --> 00:12:53 which scientists now believe stems from
00:12:53 --> 00:12:54 its early planetary
00:12:54 --> 00:12:57 development. A 2012 study of a Vesta
00:12:57 --> 00:12:59 meteorite discovered evidence of an
00:12:59 --> 00:13:02 ancient magnetic field that existed 3.7
00:13:02 --> 00:13:05 billion years ago. This confirms that
00:13:05 --> 00:13:07 Vesta is one of the few confirmed
00:13:07 --> 00:13:09 protolanets in our solar system. During
00:13:10 --> 00:13:12 its embionic planetary phase more than 4
00:13:12 --> 00:13:14 billion years ago, Vesta's interior was
00:13:14 --> 00:13:16 hot enough to melt and differentiate
00:13:16 --> 00:13:19 into distinct layers, a metallic iron
00:13:19 --> 00:13:22 core, dense mantle, and outer crust. The
00:13:22 --> 00:13:24 molten metal within its core generated
00:13:24 --> 00:13:27 an asteroidwide magnetic field that
00:13:27 --> 00:13:29 likely shielded Vesta's surface from the
00:13:29 --> 00:13:31 solar wind and cosmic rays that
00:13:31 --> 00:13:32 typically darken surface minerals
00:13:32 --> 00:13:34 through a process called space
00:13:34 --> 00:13:37 weathering. This protective magnetic
00:13:37 --> 00:13:38 field may explain why Vesta maintains
00:13:38 --> 00:13:41 its radiant appearance today, making it
00:13:41 --> 00:13:43 an accessible target for amateur
00:13:43 --> 00:13:45 astronomers. Currently shining at a
00:13:45 --> 00:13:48 robust magnitude 5.7, Vesta is tracking
00:13:48 --> 00:13:50 from northern Libra into Virgo this
00:13:50 --> 00:13:53 month and next. Even modest pocket
00:13:53 --> 00:13:55 binoculars will reveal its presence. For
00:13:55 --> 00:13:57 those hoping to spot Vesta without
00:13:57 --> 00:14:00 optical aid, try this technique. First,
00:14:00 --> 00:14:02 confirm its position with binoculars.
00:14:02 --> 00:14:04 Then use nearby stars to create a
00:14:04 --> 00:14:06 distinctive pattern that includes the
00:14:06 --> 00:14:09 asteroid. By employing averted vision,
00:14:09 --> 00:14:10 looking slightly to the side of your
00:14:10 --> 00:14:13 target rather than directly at it, you
00:14:13 --> 00:14:15 can gradually coax Vesta into view. The
00:14:15 --> 00:14:19 2.6 magnitude star Beta Libé, also known
00:14:19 --> 00:14:21 as Zubaneshali, and fourth magnitude
00:14:21 --> 00:14:23 Mujanice provide useful reference
00:14:23 --> 00:14:25 points.
00:14:25 --> 00:14:27 Stargazers have a special opportunity
00:14:27 --> 00:14:30 from April 23rd through 27th when Vesta
00:14:30 --> 00:14:33 will lie within just 35 arc minutes of
00:14:33 --> 00:14:37 the 4.5 magnitude star 16 library. As
00:14:37 --> 00:14:39 Vesta slides northwest in retrograde
00:14:39 --> 00:14:42 motion, it will form a temporary double
00:14:42 --> 00:14:45 star with its stellar companion. This
00:14:45 --> 00:14:47 alignment makes locating the asteroid
00:14:47 --> 00:14:49 particularly easy while also
00:14:49 --> 00:14:50 highlighting its nightto-ightight
00:14:51 --> 00:14:54 movement. On April 25th and 26th, the
00:14:54 --> 00:14:57 pair will be separated by a mere 10 ark
00:14:57 --> 00:14:59 minutes. The night before this close
00:14:59 --> 00:15:01 approach, Vesta forms a compact nearly
00:15:01 --> 00:15:05 linear trio with 16 Libri and HD13
00:15:05 --> 00:15:09 23rd75, a magnitude 6.1 star located 45
00:15:09 --> 00:15:12 ark minutes to its southeast. These
00:15:12 --> 00:15:14 alignments offer perfect opportunities
00:15:14 --> 00:15:16 to track this ancient protolanet as it
00:15:16 --> 00:15:19 continues its journey around our sun,
00:15:19 --> 00:15:21 carrying with it the secrets of our
00:15:21 --> 00:15:22 solar systems early
00:15:23 --> 00:15:25 formation. And let's wrap up today's
00:15:25 --> 00:15:27 episode with a celebration. This April
00:15:27 --> 00:15:29 marks a truly remarkable milestone in
00:15:29 --> 00:15:32 space exploration as NASA celebrates the
00:15:32 --> 00:15:34 Hubble Space Telescope's 35th year in
00:15:34 --> 00:15:36 Earth orbit. To commemorate this
00:15:36 --> 00:15:38 incredible achievement, NASA is
00:15:38 --> 00:15:40 releasing a collection of stunning new
00:15:40 --> 00:15:43 images capturing everything from our
00:15:43 --> 00:15:45 planetary neighbor Mars to distant star
00:15:46 --> 00:15:47 forming regions and neighboring
00:15:47 --> 00:15:50 galaxies. After more than three decades
00:15:50 --> 00:15:52 of peering into the cosmos, Hubble
00:15:52 --> 00:15:55 remains not just relevant but iconic.
00:15:55 --> 00:15:57 The most recognized and scientifically
00:15:57 --> 00:16:01 productive telescope in human history.
00:16:01 --> 00:16:03 The Hubble mission stands as a glowing
00:16:03 --> 00:16:05 testament to American technological
00:16:05 --> 00:16:07 prowess, scientific curiosity, and
00:16:07 --> 00:16:11 pioneering spirit. Launched on April 24,
00:16:11 --> 00:16:14 1990, the 24lb observatory was
00:16:14 --> 00:16:16 delivered to orbit tucked inside the
00:16:16 --> 00:16:19 space shuttle Discovery's cargo bay. At
00:16:19 --> 00:16:21 the time, NASA commentators described
00:16:22 --> 00:16:25 Hubble as a new window on the universe,
00:16:25 --> 00:16:26 a promise the telescope has fulfilled
00:16:26 --> 00:16:30 beyond anyone's wildest expectations.
00:16:30 --> 00:16:31 The telescope's journey hasn't been
00:16:31 --> 00:16:32 without
00:16:32 --> 00:16:34 challenges. Shortly after launch,
00:16:34 --> 00:16:36 engineers discovered an unexpected flaw
00:16:36 --> 00:16:39 in Hubble's nearly 8ft diameter primary
00:16:39 --> 00:16:41 mirror. This early setback was
00:16:41 --> 00:16:43 dramatically overcome when astronauts
00:16:43 --> 00:16:45 performed the first shuttle servicing
00:16:45 --> 00:16:48 mission in December 1993, installing
00:16:48 --> 00:16:50 corrective optics that restored Hubble's
00:16:50 --> 00:16:52 intended sharpness.
00:16:52 --> 00:16:54 Over the years, astronauts returned to
00:16:54 --> 00:16:57 Hubble four more times, upgrading its
00:16:57 --> 00:16:59 cameras, computers, and support systems
00:16:59 --> 00:17:00 during servicing missions that continued
00:17:00 --> 00:17:01 until
00:17:01 --> 00:17:04 2009. The numbers behind Hubble's legacy
00:17:04 --> 00:17:07 are staggering. To date, the telescope
00:17:07 --> 00:17:10 has made nearly 1.7 million observations
00:17:10 --> 00:17:12 targeting approximately 55
00:17:12 --> 00:17:15 astronomical objects. These observations
00:17:15 --> 00:17:17 have resulted in over 22 scientific
00:17:17 --> 00:17:19 papers and more than 1.3 million
00:17:20 --> 00:17:22 citations. The data collected by Hubble
00:17:22 --> 00:17:25 currently totals over 400 terabytes, the
00:17:25 --> 00:17:27 largest data set for any NASA
00:17:27 --> 00:17:29 astrophysics mission aside from the
00:17:29 --> 00:17:30 James Web Space
00:17:30 --> 00:17:33 Telescope. Hubble's long operational
00:17:33 --> 00:17:35 life has given astronomers the
00:17:35 --> 00:17:37 unprecedented ability to observe cosmic
00:17:37 --> 00:17:39 changes occurring over decades. From
00:17:39 --> 00:17:41 seasonal variations on planets in our
00:17:41 --> 00:17:43 solar system to black hole jets
00:17:43 --> 00:17:45 traveling at nearly light speed, stellar
00:17:46 --> 00:17:48 convulsions, asteroid collisions, and
00:17:48 --> 00:17:50 expanding supernova remnants. The
00:17:50 --> 00:17:52 telescope's impact on our understanding
00:17:52 --> 00:17:55 of the universe cannot be overstated.
00:17:55 --> 00:17:57 Before Hubble, powerful groundbased
00:17:57 --> 00:17:59 telescopes could see only halfway across
00:17:59 --> 00:18:01 the cosmos, and estimates for the
00:18:02 --> 00:18:05 universe's age varied widely. super
00:18:05 --> 00:18:06 massive black holes were merely
00:18:06 --> 00:18:09 suspected to exist and no planets had
00:18:09 --> 00:18:12 been detected around other stars. Among
00:18:12 --> 00:18:14 Hubble's groundbreaking achievements,
00:18:14 --> 00:18:16 its deep field images revealed countless
00:18:16 --> 00:18:18 galaxies dating back to the early
00:18:18 --> 00:18:20 universe. It allowed scientists to
00:18:20 --> 00:18:22 precisely measure the universe's
00:18:22 --> 00:18:24 expansion rate. It confirmed that super
00:18:24 --> 00:18:26 massive black holes are common among
00:18:26 --> 00:18:29 galaxies, and it enabled the first
00:18:29 --> 00:18:32 measurements of exoplanet atmospheres.
00:18:32 --> 00:18:34 Perhaps most significantly, Hubble
00:18:34 --> 00:18:36 contributed to the discovery of dark
00:18:36 --> 00:18:38 energy, the mysterious force
00:18:38 --> 00:18:40 accelerating the universe's expansion
00:18:40 --> 00:18:43 work that led to the 2011 Nobel Prize in
00:18:43 --> 00:18:46 physics. The telescope's continued
00:18:46 --> 00:18:49 productivity has inspired and paved the
00:18:49 --> 00:18:51 way for a new generation of space
00:18:51 --> 00:18:54 observatories. Hubble provided the first
00:18:54 --> 00:18:56 evidence of the distant galaxies that
00:18:56 --> 00:18:58 the James Web Space Telescope now
00:18:58 --> 00:19:00 studies in infrared wavelengths.
00:19:00 --> 00:19:03 Today, the two observatories often work
00:19:03 --> 00:19:05 in tandem, complementing each other's
00:19:05 --> 00:19:07 capabilities to study everything from
00:19:07 --> 00:19:10 exoplanets to galaxy evolution. Looking
00:19:10 --> 00:19:12 ahead, Hubble's planned successor, the
00:19:12 --> 00:19:14 Habitable World's Observatory, will
00:19:14 --> 00:19:17 feature a significantly larger mirror
00:19:17 --> 00:19:19 for observing invisible and ultraviolet
00:19:19 --> 00:19:21 light. It will be notably sharper than
00:19:22 --> 00:19:24 Hubble and up to 100 times more
00:19:24 --> 00:19:26 sensitive to starlight with a major goal
00:19:26 --> 00:19:28 of identifying potentially habitable
00:19:28 --> 00:19:30 terrestrial planets around neighboring
00:19:31 --> 00:19:33 stars. As Hubble continues making
00:19:33 --> 00:19:35 groundbreaking discoveries that shape
00:19:35 --> 00:19:36 our fundamental understanding of the
00:19:36 --> 00:19:39 universe, its legacy as humanity's most
00:19:39 --> 00:19:41 successful space telescope remains
00:19:41 --> 00:19:44 secure. A remarkable scientific
00:19:44 --> 00:19:46 instrument that has truly changed how we
00:19:46 --> 00:19:49 see our place in the cosmos.
00:19:49 --> 00:19:51 And that brings us to the end of today's
00:19:51 --> 00:19:53 cosmic journey on Astronomy Daily. What
00:19:53 --> 00:19:55 an incredible array of discoveries and
00:19:55 --> 00:19:57 celestial events we've covered. From
00:19:57 --> 00:20:00 China's ambitious lunar nuclear plans to
00:20:00 --> 00:20:02 revolutionary exoplanet detection
00:20:02 --> 00:20:05 technology, April's mini planet parade,
00:20:05 --> 00:20:07 asteroid Vesta's visibility, and of
00:20:08 --> 00:20:10 course, Hubble's remarkable 35-year
00:20:10 --> 00:20:12 legacy. I'm Anna, and I want to thank
00:20:12 --> 00:20:14 you for joining me today as we explored
00:20:14 --> 00:20:16 these fascinating developments in space
00:20:16 --> 00:20:19 and astronomy. The universe never ceases
00:20:19 --> 00:20:21 to amaze us with its wonders, and I'm
00:20:21 --> 00:20:23 grateful to share these stories with
00:20:23 --> 00:20:25 you. If you're hungry for more astronomy
00:20:25 --> 00:20:28 news, I invite you to visit our website
00:20:28 --> 00:20:29 at
00:20:29 --> 00:20:31 astronomydaily.io, where you can catch
00:20:31 --> 00:20:33 up on all the latest space and astronomy
00:20:33 --> 00:20:35 happenings through our constantly
00:20:35 --> 00:20:38 updating news feed. You'll also find our
00:20:38 --> 00:20:40 complete archive of past episodes there,
00:20:40 --> 00:20:42 perfect for diving deeper into the
00:20:42 --> 00:20:46 cosmic topics that interest you most.
00:20:46 --> 00:20:47 Don't forget to subscribe to Astronomy
00:20:47 --> 00:20:49 Daily on all good podcast platforms,
00:20:49 --> 00:20:51 including Apple Podcasts, Spotify,
00:20:51 --> 00:20:54 YouTube, YouTube Music, or wherever you
00:20:54 --> 00:20:56 get your podcasts. That way, you'll
00:20:56 --> 00:20:57 never miss an episode as we continue our
00:20:57 --> 00:20:59 journey through the cosmos together.
00:20:59 --> 00:21:01 Until next time, keep looking up and
00:21:01 --> 00:21:03 wondering about the magnificent universe
00:21:03 --> 00:21:06 we call home. This is Anna for Astronomy
00:21:06 --> 00:21:18 Daily, signing off.
00:21:18 --> 00:21:20 The stories
00:21:20 --> 00:21:25 [Music]
00:21:25 --> 00:21:29 told stories