Nov. 27, 2025

SpaceX Scrubs Launch, Mars Tracks Interstellar Visitor, and Roman Telescope's Game-Changing Potential

SpaceX Scrubs Launch, Mars Tracks Interstellar Visitor, and Roman Telescope's Game-Changing Potential

(00:00:00) Astronomy Daily podcast features the latest news from across the cosmos
(00:00:35) SpaceX scrubbed the launch of their Transporter 15 mission on Wednesday
(00:02:45) SpaceX scrubbed its B1062 booster due to unspecified issue
(00:04:26) Scientists used data from a spacecraft orbiting Mars to predict comet's path
(00:05:42) Improved trajectory means telescopes and other spacecraft can track comet with greater accuracy
(00:07:57) NASA's Nancy Grace Roman Space Telescope is scheduled for launch in 2027
(00:10:14) NASA astronaut Chris Williams and two cosmonauts set for Thanksgiving mission
(00:11:09) South Korea's homegrown Nuri rocket successfully launched on November 26th
(00:12:13) Astronomy Daily features the best of what's happening in space today

In this episode of Astronomy Daily, hosts Avery and Anna bring you the latest cosmic news, including a last-minute launch scrub for SpaceX's Transporter 15 mission, innovative tracking of interstellar visitors using Mars data, and exciting updates about NASA's upcoming Roman telescope. They also discuss a Thanksgiving Day launch to the International Space Station and a successful flight of South Korea's Nuri rocket. Tune in for an insightful journey through the universe!

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WEBVTT

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Avery: Welcome to Astronomy Daily, the podcast that

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brings you the latest news from across the

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cosmos. I'm Avery.

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Anna: And I'm Anna. Uh, on the docket today, a,

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uh, last minute launch scrub for SpaceX's

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massive rideshare mission. A new way to track

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interstellar visitors using data from Mars,

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and a look at how NASA's upcoming Roman

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telescope is already set to exceed

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expectations.

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Avery: Plus, we'll cover a Thanksgiving Day launch

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to the International Space Station and a

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successful flight for South Korea's home

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grown Nuri rocket. Let's get right into it,

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Anna.

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Uh, what happened with SpaceX?

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Anna: Well, it looks like a huge fleet of tiny

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satellites will have to wait a little longer

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to get into orbit. On Wednesday, SpaceX

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scrubbed the launch of their Transporter 15

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mission.

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Avery: Oh, that's a shame. How close did they

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get?

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Anna: They were very close. The call came just

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over 15 minutes before the planned liftoff

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from Vandenberg Space Force Base in

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California.

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Avery: Any word on why? Technical issue?

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Weather.

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Anna: SpaceX hasn't disclosed a specific reason for

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the delay, but during the live commentary, a

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spokesperson emphasized their cautious

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approach.

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Avery: Right.

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Anna: They said, and I'm quoting here, there are a

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thousand ways that a launch can go wrong and

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only one way that it can go right. So if the

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team sees anything that looks even slightly

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off, they'll stop the countdown.

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Avery: That's a very good point. Better safe than

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sorry, especially with a payload that large.

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How many satellites were on board?

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Anna: Again, A staggering 140

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satellites. It's a rideshare mission, so it's

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an eclectic mix of customers. For example,

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Planet Labs has 36 of their small

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SuperDev satellites on board, plus two of

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their larger Pelican satellites.

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Avery: Wow, that's a lot of eyes on Earth.

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Anna: Exactly. The European Space Agency

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also has a pair of satellites to monitor

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Earth's water cycle. And there are dozens

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more from companies and agencies all over the

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world, from Taiwan to Italy. There's even

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a from the company Varda, which launches

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experiments that can return to Earth in re

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entry capsules.

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Avery: And this was on one of their veteran

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boosters, wasn't it?

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Anna: It was the first stage of this. Falcon 9

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has already flown 29 times before.

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The plan was and still is for it to land

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on the drone ship. Of course I Still Love

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youe in the Pacific to be prepped for its

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30th flight.

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Avery: Incredible. So when is the next attempt?

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Anna: M the next launch opportunity is Friday,

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November 28th at 1:19pm

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Eastern Time. We'll be keeping our fingers

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crossed for them.

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Avery: 30 flights for a single booster is astounding

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it really speaks to the maturity of their

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reusability program.

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You mentioned the company's cautious

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approach. Is there any speculation on the

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specific nature of the issue that caused a

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scrub M? Was it related to the vehicle, the

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payload, or ground systems?

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Anna: SpaceX maintains a tight lid on the details

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of these holds, but sources familiar with the

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operation suggest it was likely a sensor

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reading on the ground support equipment that

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was trending out of its expected range. It

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could be something as simple as a temperature

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or pressure reading in a propellant line. The

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automated countdown system is designed to

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halt for any anomaly, no matter how small,

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to give engineers time to evaluate the data.

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It's a philosophy that has served them well.

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Preventing potential failures.

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Avery: That makes sense. And with a veteran booster

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like B1062, which has 29 flights under

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its belt, are there additional checks and

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balances in place? I imagine there's a lot of

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focus on potential metal fatigue or wear on

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components that have been through dozens of

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launch and landing cycles.

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Anna: Absolutely. That's a huge part of the

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refurbishment process. Between each flight,

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the booster undergoes extensive non

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destructive testing, including ultrasonic

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and X ray inspections to check for

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microscopic cracks in the structure and

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welds. They also swap out high

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wear components like engines and

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grid fins on a regular schedule long

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before they are expected to fail. Each

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flight provides a wealth of data that refines

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their understanding of the vehicle's life

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cycle, allowing them to confidently push the

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boundaries of what these reusable rockets can

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do.

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Avery: Absolutely. From keeping things on the ground

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to tracking things flying through deep space.

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Our next story is an Update about the third

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interstellar object ever detected. Three

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I ATLs.

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Anna: Right. These are fascinating visitors

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from beyond our solar system. The big

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challenge is always figuring out where they

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came from and where they're going.

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Avery: And getting an accurate trajectory is key.

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Astronomers just got a huge boost in that

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department thanks to a very innovative

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approach using data from a spacecraft

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orbiting Mars.

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Anna: Mars? You mean the ExoMars

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Trace Gas Orbiter?

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Avery: That's the one. Until October, we could

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only track 3i atls from

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Earth based telescopes. But as it flew past

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Mars, the TGO and Mars Express

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orbiters got to see it from a completely

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different angle.

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Anna: Ah. Uh, so they could triangulate its

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position. That makes sense.

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Avery: Exactly. And it was a huge success. By

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combining the data from Mars with the

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observations from Earth, they improved the

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prediction of the comet's path by a factor of

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10. This is actually the first time

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data from a spacecraft orbiting another

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planet has been used to do this.

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Anna: That's a fantastic milestone.

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So where is 3i atls now?

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Avery: M. It just made its closest pass to The sun

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on October 30 and is now blazing out of

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the solar system at speeds up to 250,000

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thousand kilometers per hour.

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Anna: Wow. And it's not coming anywhere near

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us, right?

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Avery: Not at all. It'll pass Earth on December

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19th at a very safe distance of

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270 million kilometers.

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That's almost twice the distance between the

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Earth and the Sun. But this improved

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trajectory means telescopes and other

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spacecraft can now track it with much greater

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accuracy to learn more about it.

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Anna: And there's a bigger picture here too. This

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isn't just about this one object. This

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entire exercise serves served as a valuable

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test for planetary defense.

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Avery: A, uh, kind of rehearsal.

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Anna: Yes. And the implications of this improved

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accuracy are significant. A, uh, more

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precise trajectory allows astronomers

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to more confidently trace the object's path

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backward in time, helping to narrow down its

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potential origin among the nearby stars.

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It's like cosmic detective work trying to

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find its home address. This also allows for

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much more efficient follow up observations

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from other telescopes, including space based

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assets like the James Webb Space Telescope,

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which can now be pointed with greater

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certainty.

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Avery: And what are they hoping to find with those

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powerful telescopes? Is there Anything

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particularly unusual about 3i

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ATLAS composition compared to the

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comets born in our own solar system?

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Anna: That is the million dollar question. So

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far from a distance, it appears to be a

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fairly typical water ice rich comet.

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But that in itself is a profound

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discovery. It suggests that the chemical

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makeup of planet forming disks might be quite

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similar across the galaxy. The detailed

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spectroscopic analysis that will now be

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possible will break down the light from its

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coma to identify the specific ratios

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of different ices, organic molecules and

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dust. This is our only way of

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directly sampling the raw ingredients from

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another solar system.

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Avery: It's great to see these capabilities being

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tested and proven.

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All right. Moving from the solar system to

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the stars themselves. Our next story is

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about a telescope that hasn't even launched

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yet.

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Anna: You must be talking about NASA's Nancy Grace

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Roman Space Telescope. It's scheduled for

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launch between 2026 and 2027,

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but it's already making waves.

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Avery: I know it's designed to study dark matter and

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dark energy, but new findings suggest it's

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going to do much more, especially when it

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comes to the that host exoplanets.

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Anna: That's right. According to a new paper in the

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Astrophysical Journal, Roman's capabilities

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in astroseismology could be a game changer.

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Avery: Astroseismology, that's the study

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of starquakes, right? The seismic waves that

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ripple across the star's surface precisely.

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Anna: And Roman is uniquely equipped for it.

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Its field of view is 100 times

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broader than Hubble's. This will allow it

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to observe a staggering number of stars in

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incredible detail and detect those subtle

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seismic waves on over

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300,000 Red Giants.

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Avery: And by studying those waves, we can learn

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about the star's interior.

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Anna: Mhm. We can determine its mass, size

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and age with unprecedented accuracy.

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As the study's leader Trevor Weiss put it,

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that information will give us a lot of

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insight on exoplanets themselves.

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Understanding the host star is crucial to

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understanding its planets, their potential

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for habitability, and the future of that

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planetary system.

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Avery: This ties into one of Roman's main missions,

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right? The Galactic Bulge Time Domain Survey.

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Anna: It does. That survey will use gravitational

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microlensing to find exoplanets. But

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this added astroseismic data means we'll get

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a complete picture of not just the planets,

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but the entire system. And since the

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galactic bulge contains some of the oldest

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stars in our galaxy, studying them will also

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give us profound insights into our galaxy's

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history and evolution.

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Avery: So Roman will basically be a time machine

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looking back at the history of star formation

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in our galaxy.

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Anna: What an incredible instrument it really is.

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The data it collects will be the largest

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asteroseismic data set ever compiled.

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Avery: Okay, let's bring it back closer to home. For

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our final stories of the day. We have a crew

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launch and the successful rocket flight to

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cover.

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First up, a very timely trip to the

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International Space Station.

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Anna: That's right, one NASA astronaut and two

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Roscosmos cosmonauts are counting down to

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liftoff on Thanksgiving Day from the Baikonur

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Cosmodrome in Kazakhstan. They're about to

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begin an eight month mission aboard the

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station. Who's flying? NASA astronaut

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Chris Williams along with Roscosmos

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cosmonauts Sergey Kud Sverchkov

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and Sergei Mikayev. Their

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Soyuz MS.M28 spacecraft

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is set to launch at 4:27am M.

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Eastern Time on Thursday. And it's a quick

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trip, right? Very quick. They'll orbit Earth

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just twice before docking with the raspet

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module at 7:38am um, Eastern,

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just over three hours after launch, they'll

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expand the Expedition 73 crew from

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seven to 10 members.

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Avery: What a way to spend Thanksgiving.

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And while they're getting ready to launch,

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another country just had a big success.

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Anna: Yes. South Korea's homegrown Nuri

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rocket has flown for the first fourth time.

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And it was another success. The rocket lifted

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off from the narrow space center on November

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26th.

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Avery: That's great news for their space program.

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What was the payload?

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Anna: The main payload was an Earth observation

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satellite called Cass

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503, which will study

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auroras and another atmospheric phenomenon

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called airglow. It also carried a dozen

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smaller rideshare cubesats for various

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companies and research institutions.

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Avery: This launch was significant for a couple of

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other reasons, too.

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Anna: Wasn't MHM was the first launch since the

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establishment of the Korea Aerospace

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Administration, or casa, back in May.

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It was also the first time that a private

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system integration company was in charge of

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the rocket's production and assembly, marking

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a big step towards commercialization for

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South Korea's launch industry.

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Avery: Fantastic to see that progress.

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And that brings us to the end of another busy

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day in space news.

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Anna: From launch scrubs on Earth to interstellar

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tracking from Mars, and a successful flight

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for South Korea, it's been quite the day.

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Thanks so much for tuning in to Astronomy

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Daily.

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Avery: Be sure to subscribe wherever you get your

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podcasts so you don't miss an episode. Until

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next time. I'm, um, Avery.

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Anna: And I'm Anna.

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Avery: Keep looking up.

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The story.