S03E167: New Sun Discovery, Orion's Progress, and Falcon Fleet Grounded
Astronomy Daily: Space News UpdatesSeptember 30, 2024x
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00:28:2226.02 MB

S03E167: New Sun Discovery, Orion's Progress, and Falcon Fleet Grounded

Astronomy AstroDailyPod - The Podcast: S03E167
Welcome to Astronomy AstroDailyPod, your source for the latest Space and Astronomy news. I'm your host, Steve Dunkley, and we've got a fascinating episode for you today. Let's dive into some of the most intriguing stories from the cosmos.
Highlights:
- Upcoming Annular Solar Eclipse: On October 2, an annular solar eclipse will sweep across the southern hemisphere, including iconic destinations like Rapa Nui (Easter Island), southern Chile, and southern Argentina. Learn about the "ring of fire" effect and where you can best view this celestial event.
- Earth's Temporary Mini Moon: A small asteroid, about the size of a school bus, will become a temporary mini moon for Earth, orbiting our planet for about two months. This rare event offers a unique opportunity for astronomers to study near-Earth objects.
- Hera Mission Returns: An all-volunteer crew on a simulated trip to Mars has returned to Earth after 45 days in isolation at NASA's Johnson Space Centre. Discover how their mission contributes to our understanding of human behaviour and performance in confined, remote environments.
- SpaceX Falcon Fleet Grounded: SpaceX has grounded its Falcon rocket fleet following a second stage problem during a recent launch. This suspension could impact upcoming missions, including NASA's Europa Clipper and ESA's Hera mission.
- Planet Formation Study: New research reveals that planets larger than Earth struggle to form around stars with low metallicity. This study provides insights into the conditions necessary for planet formation and has implications for the search for extraterrestrial life.
Short Takes:
- An all-volunteer crew on a simulated Mars mission returned to Earth, providing valuable insights for future Space exploration.
- SpaceX's Falcon rocket fleet is grounded due to a second stage problem, impacting upcoming missions.
- A new study explores why planets larger than Earth struggle to form around low metallicity stars.
For more Space news, be sure to visit our website at astronomydaily.io. There you can sign up for our free AstroDailyPod newsletter, catch up on all the latest Space and Astronomy news with our constantly updating newsfeed, and listen to all our back episodes.
Don't forget to follow us on social media. Just search for #AstroDailyPod on facebook, X, YouTubeMusic, and TikTok.
Thank you for tuning in. This is Steve signing off. Until next time, keep looking up and stay curious about the wonders of our universe.
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[00:00:00] Welcome to Astronomy Daily once again its 30th of September 2024.

[00:00:12] Yes Steve, with you again all the way from Down Under, and we have a nice collection

[00:00:17] of tales from the Astronomy Daily newsletter details on how to receive that in your email

[00:00:21] are coming up later in the episode, aren't they?

[00:00:24] We always say it, every episode.

[00:00:27] Well, that we do.

[00:00:28] Today's newsletter has some interesting stories, including the discovery of a new sun in our

[00:00:32] night sky.

[00:00:33] Well let's show it doesn't happen every day, a new sun.

[00:00:35] Anova, you can read all about it.

[00:00:37] Hi, yes, and there's another one about the progress of the Orion spacecraft ready

[00:00:43] for the Artemis 3 mission and more from the James Webb Telescope which shares a report on

[00:00:49] early star formation.

[00:00:50] All in the actual astronomy daily newsletter but what have we chosen for our presentation today

[00:00:55] my favorite human?

[00:00:56] Well, Helen, I'm glad you asked because I found a story about the speed of the Uncoming

[00:01:01] Anulus Solar eclipse.

[00:01:02] Yes, the speed which will sweep across the southern hemisphere on Octa B2 and also a story

[00:01:08] that has everyone talking.

[00:01:10] The little rock that will become Earth's temporary moon just for a little while.

[00:01:15] That sounds weird.

[00:01:16] Well it is a bit weird but that's why it's interesting.

[00:01:19] A bit like you.

[00:01:20] So what?

[00:01:21] Weird and interesting.

[00:01:22] Okay, that's good, I think.

[00:01:24] I'm still trying to work out which bits are weird and which bits are interesting.

[00:01:28] Oh well, I'd like to think I'm mostly interesting.

[00:01:31] Being weird can be good unless you're in like a really important role.

[00:01:35] Like mine?

[00:01:36] Show, Helen.

[00:01:37] Like yours.

[00:01:38] You can be as weird as you like.

[00:01:40] I think I'll be not weird at all but completely interesting.

[00:01:43] Well you go right ahead and do that, Helen.

[00:01:46] I don't think you'll get any complaints from around here.

[00:01:48] I will.

[00:01:49] So what's in your story file today, Helen?

[00:01:51] Oh, you might recall the hair omission which is a simulated mission to Mars.

[00:01:55] Yes I wonder what happened to that simulated mission.

[00:01:57] Did they get simulated lost in simulated space?

[00:02:00] Again with the weird stuff.

[00:02:02] No, they did not.

[00:02:03] More on that later.

[00:02:04] Okay, Doki.

[00:02:05] And did you hear SpaceX has grounded its Falcon fleet because of an engine misshap?

[00:02:09] Yes, what he heard all about that one's space ex news is always interesting news.

[00:02:15] And not at all weird.

[00:02:16] No, not at all.

[00:02:17] But this one is a little weird.

[00:02:19] Okay, hit me.

[00:02:19] A new study explores why planets larger than Earth's struggle to form in certain locations

[00:02:24] like low-medalicity stars.

[00:02:26] Hmm, yeah.

[00:02:28] That one is a bit weird.

[00:02:29] I thought you'd like it.

[00:02:31] And so while you're being so weirdless yourself and so interesting would you also be so

[00:02:35] kind?

[00:02:36] The short takes.

[00:02:37] If you please madam.

[00:02:38] My pleasure Mr. Weirdo.

[00:02:47] An all volunteer crew on a simulated trip to Mars returned to Earth on September 23rd,

[00:02:52] 2024.

[00:02:53] After being isolated in a tiny habitat at Johnson Space Center in Houston.

[00:02:58] Their work is contributing to the science that will propel humanity to the moon and eventually

[00:03:02] Mars.

[00:03:04] The Hare omissions provide valuable scientific insights into how humans may respond

[00:03:08] to the confinement, demanding work-life conditions, and remote environments that astronauts

[00:03:12] may encounter on deep space missions.

[00:03:15] These insights help NASA prepare for humanity's next giant leap to the moon and Mars.

[00:03:21] Campaign 7 Mission 3 started when Hare Operations lead Ted Bobbic rain the bell outside

[00:03:25] the habitat 10 times, a ceremonial send-off wishing the crew a safe and successful simulated

[00:03:30] mission to Mars.

[00:03:32] 7 Rings honored the campaign and three more signaled the mission, continuing a long-standing

[00:03:36] tradition.

[00:03:38] At Ingress, Anderson, a structural engineer at NASA's Langley Research Center in Virginia,

[00:03:43] told Hare us Mission Control, we're going to take good care of this ship of yours on

[00:03:47] our journey.

[00:03:48] The Hareau crew members participated in 18 human health and performance studies,

[00:03:53] seven of which were led by scientists from outside the United States.

[00:03:57] These international studies are in collaboration with the United Arab Emirates Muhammad

[00:04:01] bin Rashid Space Center and the European Space Agency, ESA.

[00:04:06] Throughout the simulation, the crew performed a variety of tasks.

[00:04:10] They harvested plants from a hydroponic garden, Grishrimp, deployed a small cube satellite

[00:04:14] to simulate data gathering, conducted a virtual reality walk on the surface of Mars and

[00:04:19] flew simulated drones on the Martian terrain.

[00:04:23] These activities are designed to immerse the crew in the task-focused mindset of astronauts.

[00:04:28] NASA scientists then monitor Hareau crew to assess how routine tasks, along with isolation

[00:04:33] and confinement, impact behavior and performance.

[00:04:36] As their mission progressed, the team experienced longer communication delays with mission

[00:04:41] control, eventually reaching five minute lags.

[00:04:44] This simulates the challenges astronauts might face on Mars, where delays could be up to 20 minutes.

[00:04:50] Scientists studying Hareau crew are interested to see how this particular group builds

[00:04:54] independent, autonomous workflows, despite this communication delay.

[00:04:59] As the mission near descent, Mekandless and Anderson participated in a ground link, a live session

[00:05:04] connecting them with middle school students in a classroom in coconut growth, Florida,

[00:05:08] and in Olaitha, Kansas.

[00:05:10] Ground links provide a unique opportunity for students to engage directly with crew members

[00:05:15] and learn about the realities of long-duration missions.

[00:05:19] The students asked the crew about life inside the habitat, the challenges of isolation,

[00:05:23] and what it might be like to live on Mars.

[00:05:26] They were also curious about the crew's favorite foods and activities.

[00:05:30] Mekandless shared her love for shutter crists and freeze-dried pad tie

[00:05:34] and proudly showed off favorite sports teams from her home state of Kansas,

[00:05:37] much to the cheers of the crowd.

[00:05:39] Anderson displayed the massive collection of comics and fantasy books that she read inside the

[00:05:45] habitat. In the late afternoon of September 23, 2024, the crew regressed from Hareau,

[00:05:50] marking the end of their 45-day simulated mission to Mars.

[00:05:54] After stepping out of the habitat, the crew expressed gratitude for the opportunity

[00:05:58] and reflected on the mission's significance.

[00:06:02] Following our safe passage to Mars and our safe return to Earth as the crew of campaign 7,

[00:06:06] mission 3, we hereby officially transfer this exploration vessel to the flight analogs operations

[00:06:11] team, said Kent. We hope this vessel continues to serve as a safe home for future Hareau

[00:06:17] crews. SpaceX's Falcon rocket fleet was grounded for the third time in three months after a

[00:06:26] second-stage problem occurred Saturday following the successful launch of a Dragon capsule

[00:06:30] carrying two crew to the International Space Station.

[00:06:34] The suspension in flights comes as the company prepares to launch two solar system exploration

[00:06:38] missions in October with narrow launch windows. SpaceX said the Falcon 9 second stage that

[00:06:44] launched NASA's crew nine mission failed to correctly perform a firing of its Merlin vacuum

[00:06:48] engine less than 30 minutes after releasing Dragon Freedom into a planned orbit.

[00:06:53] The engine firing is designed to prevent the rocket body from becoming space debris by

[00:06:57] driving the stage into the atmosphere for a destructive reentry.

[00:07:01] Any debris was supposed to fall harmlessly into the ocean in an area previously identified

[00:07:05] in warnings to meriners and aviators. Falcon 9 second stage was disposed in the ocean as planned,

[00:07:11] but experienced an off-nominal de-orbit burn, SpaceX said in a social media post

[00:07:16] shortly after midnight eastern daylight time on Sunday. As a result, the second stage safely landed

[00:07:22] in the ocean, but outside of the targeted area. The misshap is likely to prompt an investigation from

[00:07:28] the federal aviation administration which oversees the company's launch licenses. SpaceX is currently

[00:07:34] in dispute with the F.A. overfines related to Falcon 9 activities at Kennedy Space Center and

[00:07:39] delays in gaining authorization for the fifth test flight of its Starship vehicle from Starbase in Texas.

[00:07:45] Space flight now reached out to the F.A. for a comment, but has not yet received a response,

[00:07:49] with the F.A.'s offices closed for the weekend.

[00:07:52] debris from the rocket stage should have fallen in a stretch of the Pacific Ocean that

[00:07:56] started east of New Zealand, but probably ended up falling further down range, but still south

[00:08:00] the equator, according to Jonathan McDowell, an astrophysicist and tracker of space launches and satellites.

[00:08:07] The most likely failure mode that still results in reentry is a slight underburn,

[00:08:11] he said in a post on X, formerly known as Twitter. So you expect the entry to be further along,

[00:08:17] but not by too much. McDowell told Space Flight now he estimates the de-orbit burn

[00:08:22] should have occurred around 155pm eastern daylight time as the craft passed over Yemen.

[00:08:27] If everything had gone to plan, reentry would have happened about 35 minutes later.

[00:08:33] SpaceX was scheduled to launch 20 satellites for one web from its west coast launch

[00:08:37] pad at Vanburg Space Force Base late Sunday night local time, but that mission was put on hold,

[00:08:41] along with the Starlink delivery mission from Cape Canaveral originally planned for Wednesday.

[00:08:46] We will resume launching after we better understand the root cause of the problem, SpaceX said in

[00:08:51] statement, this will be the third grounding of the Falcon 9 fleet in three months.

[00:08:57] An upper-stage problem resulted in the loss of 20 starlink satellites on July 11.

[00:09:03] Flight's resumed 15 days later after the company determined the cause of a liquid oxygen leak

[00:09:07] and came up with a quick fix. A shorter suspension of just three days came when a Falcon 9

[00:09:12] first stage made a crash landing on the deck of SpaceX's drone ship after an otherwise successful launch

[00:09:17] on August 28th. The company has not disclosed the cause of that miss-hap.

[00:09:23] The grounding of the Falcon fleet will be of particular concern to NASA and the European Space

[00:09:27] Agency, which had launches of solar system exploration missions planned within days of each other in

[00:09:32] early October. On October 7, a Falcon 9 is scheduled to launch from Cape Canaveral with the

[00:09:38] S.A.'s air omission to study the Didimose Binary asteroid system that was impacted by the

[00:09:48] 7th. Then on October 10, a Falcon Heavy, which uses the same second stage as the Falcon 9,

[00:09:54] is due to launch NASA's Europa Clipper on a mission to explore one of Jupiter's most intriguing

[00:09:58] moons. The Falcon Heavy will need all its performance for the $5 billion mission and two

[00:10:03] burns of the rocket's second stage will be required. The spacecraft will be released from the

[00:10:08] rocket at a velocity of approximately 25,000 miles per hour, 40,200 kilometers per hour, the fastest

[00:10:15] speed ever achieved by a Falcon upper stage. The launch window for Europa Clipper closes on October 30th.

[00:10:25] A recent study by astronomers presents new evidence on the boundaries of planet formation,

[00:10:29] revealing that planets larger than Earth's struggle to form around stars with low

[00:10:33] metalicity beyond a certain threshold. Using the Sun as a baseline, astronomers can measure

[00:10:39] when a star formed by determining its metalicity or the level of heavy elements present within it.

[00:10:44] Metalrich stars or nebulas formed relatively recently while metalpoor objects were likely present

[00:10:49] during the early universe. Previous studies found a weak connection between

[00:10:53] metalicity rates and planet formation, noting that as a star's metalicity goes down, so, too,

[00:10:59] does planet formation for certain planet populations like subsaturns or sub-neptions?

[00:11:05] Yet this work is the first to observe that under current theories, the formation of super Earth's

[00:11:09] metalpoor stars becomes significantly more difficult, suggesting a strict cutoff for the

[00:11:14] conditions needed for one to form, said lead author Kirsten Bolley, who recently received a PhD in

[00:11:19] astronomy at the Ohio State University. When stars cycle through life, they enrich the surrounding

[00:11:25] space until you have enough metals or iron to form planets, said Bolley. But even for stars with

[00:11:31] lower metalicities, it was widely thought that the number of planets it could form would never reach zero.

[00:11:36] Other studies posited that planet formation in the Milky Way should begin when stars fall

[00:11:41] between negative 2.5 to negative 0.5 metalicity, but until now, that theory was left and proven.

[00:11:48] To test this prediction, the team developed an end-searched catalogue of 10,000 of the most

[00:11:53] metalpoor stars observed by NASA's Transiting Exoplanet Survey Satellite Mission.

[00:11:58] If correct, extrapolating known trends to search for small, short period planets around one region

[00:12:03] of 85,000 metalpoor stars would have led them to discover about 68 super Earth's.

[00:12:09] Surprisingly, researchers in this work detected none, said Bolley.

[00:12:13] We essentially found a cliff where we expected to see a slow or a gradual slope that keeps going,

[00:12:18] she said. The expected occurrence rates do not match up at all.

[00:12:23] This cliff, which provides scientists with a time frame during which

[00:12:26] metalicity was too low for planets to form, extends to about half the age of the universe,

[00:12:30] meaning that super Earths did not form early in its history.

[00:12:34] 7 billion years ago is probably the sweet spot where we begin to see a decent bit of

[00:12:38] super Earth formation, Bolley said. Moreover, as the majority of stars formed before that

[00:12:44] era have low metalicities and would have needed to wait until the Milky Way had been enriched

[00:12:47] by generations of dying stars to create the right conditions for planet formation, the results successfully

[00:12:53] propose an upper limit on the number and distribution of small planets in our galaxy.

[00:12:58] In a similar stellar type as our sample, we now know not to expect planet formation to be a

[00:13:03] abundant once you pass a negative 0.5-medalicity region, said Bolley.

[00:13:08] That's kind of striking because we actually have data to show that now.

[00:13:12] What's also striking is the study's implications for those searching for life beyond Earth,

[00:13:16] as having a more precise grasp on the intricacies of planet formation can supply scientists

[00:13:20] with detailed knowledge about where in the universe life might have flourished.

[00:13:24] You don't want to search areas where life wouldn't be conducive or in areas where you

[00:13:28] don't even think you're going to find a planet, Bolley said.

[00:13:32] There's just a plethora of questions that you can ask if you know these things.

[00:13:36] Such inquiries could include determining if these exoplanets hold water, the size of their core,

[00:13:41] and if they've developed a strong magnetic field, all conditions conducive for generating life.

[00:13:47] Fortunately, future observations could be attained with the help of upcoming projects

[00:13:51] like NASA's Nancy Grace Roman Space Telescope and the European Space Agency's Played-O Mission,

[00:13:56] both of which will widen the search for terrestrial planets inhabitable zones like our own.

[00:14:00] Those instruments will be really vital in terms of figuring out how many planets are out there

[00:14:05] and getting as many follow-up observations as we can, said Bolley.

[00:14:25] Thank you for joining us for this Monday edition of Astronomy Daily.

[00:14:29] We often just have a few stories from the now famous Astronomy Daily newsletter which you can

[00:14:33] receive in your email every day, just like Halley and I do. And to do that, just visit our URL

[00:14:40] AstronomyDale.io and place your email address in the slot provided, just like that,

[00:14:45] you'll be receiving all the latest news about science, space science, and astronomy from around the

[00:14:50] world as it's happening. And not only that, you can interact with us by visiting at Astro Daily

[00:14:57] hot on X or at our new Facebook page, which is of course Astronomy Daily on Facebook. See you there.

[00:15:06] Astronomy Daily with Steve and Halley, space science and astronomy.

[00:15:20] Now after the great northern eclipse comes along the ring of fire,

[00:15:25] Anula Solar eclipse that can be seen in some iconic destinations what is a ring of fire or

[00:15:31] anula eclipse well. The moon looks like it's taking a bigger and bigger bite out of the

[00:15:36] sun until it comes at, but not completely leaving a ring of orange around it. A ring of fire can be seen

[00:15:42] in the Pacific Ocean or from the Pacific Ocean in South America, similar to the one witnessed

[00:15:48] in the US Southwest on October 14, 2023. But on October 2 this year, an Anula Solar eclipse will

[00:15:56] pass over parts of the Pacific Ocean, Southern Chile and southern Argentina during this

[00:16:03] Anula Solar eclipse at the point of greatest eclipse in the Pacific. The moon will obscure

[00:16:08] 93% of the Sun's center creating a ring of fire effect visible for seven minutes and 25 seconds.

[00:16:16] And as I've reported on previous eclipses, during an Anula Solar eclipse it is never safe to

[00:16:21] direct the at the sun without solar eclipse glasses, specially designed for solar viewing.

[00:16:27] Ordinary sunglasses will not protect you. Khaled Film will glass, likewise.

[00:16:34] Only prescribed viewing eyewear will suffice. So here's everything you need to know about

[00:16:40] the Anula Solar eclipse on October 2, 2024 in Chile and Argentina. The October 2 eclipse will be

[00:16:48] similar to the Anula Solar eclipse in October 2023, which was visible across the US Southwest,

[00:16:56] Central America and South America. All solar eclipse is a curve when a new moon is positioned

[00:17:01] precisely between the Earth and the Sun and Custards shadow on the Earth. However, unlike

[00:17:07] a total solar eclipse and Anula Solar eclipse occurs when the moon is slightly further from the Earth.

[00:17:14] Even when the disks are lined from our perspective, the moon's shadow doesn't completely block

[00:17:20] out the Sun's light. Instead a ring of sunlight is visible around the moon. This eclipse will have

[00:17:26] a magnitude of 0.9326 according to eclipswise.com. That means about 93% of the Sun will be blocked

[00:17:35] out by the moon during the eclipse resulting in an Anula Solar eclipse which is Latin for ring

[00:17:40] and according to Moonlink, the moon will appear 6.4% smaller than average. The closer the

[00:17:48] observer is to the centerline of the Anula pathway, the more circular the ring of fire will be

[00:17:55] and the longer it will last but experienced eclipse chases often observed from the edge of the path

[00:18:00] during the Anula-Ecclesiola eclipse to see extended views of Bailey's beads,

[00:18:06] fizzing around where the limb of the moon appears to touch the Sun. They can be visible for

[00:18:12] several minutes and it's quite spectacular. The ring of fire this time will be visible only within

[00:18:18] a path of Anularity that passes across the Pacific Ocean, Southern Chile and Southern Argentina.

[00:18:24] Now this area will include the volcanic island of Rapa Nui, Easter Island as it's known.

[00:18:30] An iconic travel destination that's famous for the mysterious stone statues called Mai.

[00:18:35] Some of which reach 40 feet or 12 meters tall and weigh 75 tons.

[00:18:41] The island, which is only 63 square miles or 163 square kilometers, is located 2,300 miles

[00:18:49] or 3,700 kilometers from the Chilean court coast, making it the most isolated in habitant

[00:18:55] landmass on earth. Remarkably, it will be the second time a central solar eclipse has been visible

[00:19:01] from this tiny Pacific island in recent decades, with a total solar eclipse that glimpsed

[00:19:06] there on July 11, 2010. The next total and Anula eclipse is there will be in 2324 and 2345

[00:19:15] respectively. So how fast is this Anularity ring of fire going to be? In each area you can expect

[00:19:22] this briefing counter with the conjunction on Rapa Nui, Easter Island, Chile, 5 minutes, 38 seconds

[00:19:29] to 6 minutes, 12 seconds of Anularity starting at 1403. At Cockroach and Chile,

[00:19:36] 5 minutes, 40 seconds of Anularity starting at 321 at Pareto Moreno National Park,

[00:19:44] Argentina, 6 minutes, 17 seconds starting at 521 at Porto de Zierto Argentina,

[00:19:50] 3 minutes 22 seconds of Anularity starting at 527. At Porto de Zierto Argentina,

[00:19:58] 5 minutes 12 seconds of Anularity starting at 524 and for those who are very keen,

[00:20:05] yes there are organised tours headed for Rapa Nui, Easter Island, especially to view the event.

[00:20:11] You've got to be very keen. But there is going to be some bad news attached to all of this

[00:20:16] wonderful news about eclipses. The chances of clouds that day are 75% for Rapa Nui, Easter Island,

[00:20:24] 90% for Perito Moreno National Park, 65% to 70% for locations on Argentina's Atlantic Coast

[00:20:32] according to Time and Date. On Rapa Nui, Easter Island, the cooling of the land could cause

[00:20:37] convective clouds to dissipate according to eclipsa file with the south coast statistically slightly

[00:20:45] favoured. The chances of seeing the ring of fire are smallest, unfortunately, on Chile's

[00:20:50] Pacific Coast and the highest on Argentina's Atlantic Coast. The latter has the least interesting

[00:20:57] scenery it says here over anywhere on the path, how unfortunate. But the eclips will arguably be

[00:21:03] bon't more dramatic side because it will occur much lower in the sky that will be.

[00:21:09] And I do hope you get to see this wonderful event and capture some memorable images

[00:21:14] so that you can share them with us.

[00:21:27] Now just in case you're the one person who hasn't heard yet, Earth is about to receive

[00:21:32] a visitor in the shape of a small asteroid whose well which is going to orbit the Earth.

[00:21:40] It's going to become a mini moon. This mini moon is actually an asteroid about the size of a

[00:21:44] tall bus, about 33 feet or 10 meters for the rest of the world. It is a when it

[00:21:51] whizzes by Earth on Sunday. It will temporarily be trapped by our planet's gravity and orbit

[00:21:58] the globe but only for about two months the space rock which is called our glamourously called

[00:22:04] 2024 PT5. Wonderful. It was first spotted in August by astronomers at

[00:22:12] complete sense, the University of Madrid using a powerful telescope located in southern and

[00:22:19] south Africa. These short lived mini moons are more common than we realised said which had been

[00:22:25] zeller in astronomer at Massachusetts Institute of Technology. The last known one was detected

[00:22:31] in 2020. This happens with some frequency but we rarely see them because they're very small and

[00:22:37] very hard to detect, he said. Only recently has our survey capability reached the point of

[00:22:43] spotting the routine. The discovery by Carlos Della Fuentes Makos and Rau de la Fuentes Makos

[00:22:51] was published by the American Astronomical Society. This one won't be visible to the naked eye

[00:22:57] or through amateur telescopes but it can be observed with relatively large research grade tellerscopes.

[00:23:04] Carlos Della Fuentes Makos said in an email. Benzell who was not involved in the research said

[00:23:09] it's not clear whether the space rock originated as an asteroid or as a chunk of the moon that got

[00:23:15] blasted out. NASA defines moons as naturally formed bodies that orbit planets. Intuitively we

[00:23:22] think of moons as big rocks that stick around for a while like our very own moon. Astronomers

[00:23:28] have defined many moons as asteroids or comets that are gravitationally captured by a planet

[00:23:34] for a temporary amount of time. Small mini moons are very common but ones big enough to spot

[00:23:41] a very rare. 2024 PT 5 is only the fifth ever detected mini moon captured by Earth.

[00:23:49] A mini moon is a temporary captured orbiter if it competes, completes at least one full orbit of

[00:23:56] the Earth before returning to its usual orbit around the Sun. If a mini moon is captured by Earth's

[00:24:02] gravity but doesn't make it around for a full orbit, its temporarily captured fly by instead.

[00:24:09] Two of Earth's mini moons were temporarily captured orbit as well as the other three including

[00:24:15] 2024 PT 5 fall into the temporary captured fly by category. Mini moons are asteroids from the

[00:24:24] large population of near Earth objects or any of those that are temporarily grabbed from their

[00:24:30] orbit around the Sun. Near Earth objects are defined as natural physical objects floating in space,

[00:24:37] such as asteroids, space rocks or comets, dirty space snowballs made of rock and ice that are

[00:24:45] orbiting the Sun and approach to within 1.3 times the Earth's distance from the Sun at some point

[00:24:52] in their orbit because these objects are around the same distance from the Sun as the Earth,

[00:24:58] they can sometimes be captured by Earth's gravity. 2024 PT 5 and the previous mini moon call 2022

[00:25:07] NX1 were both captured from a group of asteroids orbiting the Sun at a similar distance from Earth

[00:25:13] called the Arjunus which is one of the main characters of the Hindu epic Mahabharata. Please

[00:25:20] forgive my pronunciation again I am Australian. The first known mini moon was called 1991 VG. It arrived

[00:25:28] in late 1991 and left early in 1992 and like 2024 PT 5 it was around 10 meters in diameter.

[00:25:38] In 2002, a astronomer Bill Yeong found what he thought was a second mini moon.

[00:25:48] J00233 are they great at naming these things however on closer inspection the object display

[00:25:54] to spectra of light suggesting it was coded in white paint containing titanium oxide.

[00:26:01] Then a study of how the objects brightness changed over time found its shape resembled something

[00:26:05] like the upper stage of a rocket. Astronomers now believe J00233 is the third stage of the Apollo

[00:26:14] Saturn V rocket S1 the V instead of a natural mini moon the plot twist of J00233 I think that's the

[00:26:24] third way I've read that number made astronomers a bit more cautious when another mini moon

[00:26:33] 2006 RH120 was spotted on September 14, 2006 and it was first classified as artificial

[00:26:41] however after more observations it turned out to be a natural mini moon about two to seven meters in diameter

[00:26:50] in 2006 RH102 stuck around from July 2006 until July 2007 the new mini moon will circle it

[00:27:03] low for almost 57 days but one complete a full orbit on November 25 it will part ways with the earth

[00:27:10] and continue its solo trajectory through the cosmos it's expected to pass by again in 25

[00:27:19] that nice and there you have it another episode of astronomy daily thanks for staying with us

[00:27:32] today on astronomy daily please don't forget Hallie's cousin Anna will be manning the studio

[00:27:37] from Tuesday to Saturday with more stories covering space space science and astronomy isn't there

[00:27:43] right Hallie she does a nice job very stylish I know so you won't miss a thing Hallie where do you

[00:27:55] with the territory what are you using human well I like to use Spotify in the car I get every episode

[00:28:01] in its true I don't miss anything either Anna will be so pleased yes I know she is nice so folks

[00:28:07] that's all we have until next Monday so bye for now bye