The Surprising Secrets of Destroyed Exoplanets | SciShow News

The Surprising Secrets of Destroyed Exoplanets | SciShow News

This episode is sponsored by Squarespace. From websites and online stores to marketing tools and analytics, Squarespace is the all-in-one platform to build a beautiful online presence and run your business. [♪ INTRO] Finding a new exoplanet used to be a really
big deal all on its own. I remember these days! I was alive when we found the first
exoplanet! But now that we’ve found thousands of planets
orbiting other stars, and astronomers don’t just want to know that a planet exists, they want to know what it’s like. New work published last week in the journal Science shows one creative way to answer that question. And the work reveals that, throughout the
galaxy, planets seem to be made up of rock that’s a lot like the rock you might pick
up in your backyard. Understanding the composition of exoplanets is tricky business, because we can’t just
like, fly over and bring a piece back to the lab and do a bunch of chemistry on it. In some cases, you can learn a lot by watching
how light from a planet’s star gets altered as it passes through the planet’s atmosphere. But that won’t get you anywhere with a planet
that doesn’t have an atmosphere. And sometimes scientists care more about what’s under
the surface than what’s floating above it. For decades, there’s been basically no solution
for these problems, but this new research came up with an unusual solution to the problem: scope out worlds that are in the process of being destroyed. The work focuses on six white dwarf stars, the burned-out cores left behind when stars like our Sun reach the end of their lives. White dwarfs are extremely dense, and their
powerful gravity can shred any asteroids or planetary fragments that wander too close. As that material falls onto the star, it pollutes
the star’s outer layers with new elements. Astronomers can see the signatures of those
elements in the star’s light. In this study, researchers scoured past observations
of nearby white dwarfs in search of the six most common elements in Earth’s crust: iron, oxygen, silicon, magnesium, calcium, and aluminum. And they found them. But their most important finding was that there wasn’t just iron and oxygen in these rocks, there was iron oxide, better known as rust. Iron oxide is common in rocks from our solar
system, but it only forms under the right conditions, such as in places with tectonic
activity. Finding it in these far-flung locations means
that it’s probably common for rocky planets to have tectonic plates, just like Earth. And the fact that this iron oxide exists also suggests that these planets could have magnetic fields and atmospheres just like us. Basically, the study implies that these far-off worlds are pretty similar to Earth and its rocky neighbors, which could make it a whole
lot easier to understand the nature of exoplanets. Also, watching a planet get destroyed is a
pretty fun way to do science. I hope there wasn’t anybody, like, living their best
life there. They certainly aren’t anymore. Last week, we also got some good news about
NASA’s ability to explore closer to home. As part of its Artemis project to return astronauts
to the Moon, the agency revealed a new spacesuit designed to better meet astronauts’ needs
wherever they’re working. The most important change is in sizing. NASA’s current suit can trace its origins to the ones worn by Apollo astronauts on the Moon. Astronauts who, of course, were all men. As you might expect, this has created problems, like in early 2019, when NASA was forced to cancel the first planned all-woman spacewalk because they couldn’t come up with two working suits that fit them. That historic walk finally happened last week, but the whole affair highlighted the ongoing inequity faced by female astronauts. NASA’s new design solves that problem, at
least, when it comes to spacesuits. With this new program, each astronaut will
have their entire body 3D-scanned. And with that data in hand, engineers can match the astronaut with the most comfortable suit. The spacesuits are designed to fit nearly all body types,
women, and men. They’re also easier to put on and more flexible, which should make it easier for future Moonwalkers to carry out their tasks on the surface. There’s still lots of work left to do, though,
and NASA expects it will be about two years before an astronaut on the International Space
Station takes one for the first test-drive. But when it’s ready, this new suit could
support astronauts for decades of future exploration. So good thing it also looks pretty cool. Finally, we wanted to share some happy news
about NASA’s Mars InSight mission, which has been working to understand the interior
of Mars since last year. One of Insight’s key instruments is the
Heat Flow and Physical Properties Package or HP^3, which was provided by the German
Aerospace Center. HP^3 is designed to burrow several meters
underground and make temperature measurements that will help scientists calculate how quickly
Mars is losing heat. Its centerpiece is what’s called the “mole,” which is sometimes described as a “self-hammering nail.” It just kind of slams itself deeper and deeper
into the ground, dragging a wire behind it to relay data back to InSight. But back in March, the mole suddenly stopped
making progress after traveling only about 35 centimeters below the surface. Now, seven months later, engineers finally
got it moving again! The problem turned out to be a lack of friction. The mole relies on friction with the surrounding
material to drag itself further down, but the upper layer of the Martian surface is
crustier than scientists expected, so the mole had trouble grabbing hold. NASA’s solution was pretty clever,
they used InSight’s robotic arm to press the mole against the side of the borehole, giving
it the friction it needed to move forward. So far, it’s only gone a couple of extra
centimeters, but that is a lot more than the nothing they were getting before. So score one for engineering a solution from
a hundred million kilometers away. From stealing a peek at dying worlds to 3D-scanning
astronauts and lending a hand to a self-hammering nail, this was totally a week for out-of-the-box
thinking. Making it up as you go is part of what makes
exploration so cool. Engineering creative solutions in space is
one thing. But that kind of creativity can also go a long way here on Earth. And say you had a great idea, like if you
wanted to start a campaign to plant trees and let the world know about it. You might
want to create a website. Squarespace is one place to start. It’s got powerful blogging tools, so you can easily share stories, photos, videos, and updates. You can even schedule your posts to make your content go out when you’re ready. The blogging platform also supports a sharing
button that your visitors can use to share content on Facebook, Twitter, Reddit, and more. You can also reach people in their inboxes
by setting up a Squarespace email campaigns. It’s easy to use the Squarespace platform
to unify your brand voice, from your homepage to your emails. And you can get a free trial. When you’re ready to get started, head over to and use the code “space” to save 10% off
your first purchase of a website or domain. [♪ OUTRO]

90 Replies to “The Surprising Secrets of Destroyed Exoplanets | SciShow News

  1. Thanks to Squarespace for sponsoring this video. Go to for a free trial and when you’re ready to launch, go to and add code “SPACE" at checkout to save 10% off your first purchase of a website or domain.

  2. How is it that people can dislike these videos? I swear, some people just thumbs down every video and apparently dont like to learn.

  3. Great episode, keep it coming. Looking forward to your future episodes on these subjects: EU Disruption Playlist

    Volcanoes, Earthquakes and Sun's Connection–i1yFRefPupc6YU

    Earthquake Prediction

    "Climate Forcing" Made Easy

    Climate Change due to Earth's Pole Shift

    5 Truths About Earth's Magnetic Reversal

    CLIMATE FORCING still missing from ALL Climate Models

  4. All we got to do is build a coder and decoder for particles using the spooky action we could possibly look into black holes from many light years away we could also find out the compositions of atmospheres even the foundations of the planet so much could be done with that technology if somebody can just put together a machine control that aspect of quantum physics

  5. For all we know we might have just witness a civilisation get destroyed if they had a planet very similar to ours and it was a lot older.

  6. Meanwhile, Disney is taking notes on this as they plan out the arrival of Galactus in the MCU and another superweapon for Star Wars.

  7. How do scientists know that these planets have cleared their orbits of debris to meet the third point of a classification of a planet? If they can't, it seems like the rules say we should stop calling them planets, or we could just start calling Pluto a planet again …. just saying…

  8. It's extremely rare condisions that allow life on Earth.

    But about different extremly rare condisions.
    Say a planet with a moon that's not Tidley locked . and spin and genarate a megnetic feild.

    .or a moon or even planet fare from it's sun and heavy cloud cover Because valcanic activity being pulled by other moons or planets causing lava flaws but Enough sold surface for life. And deep enoy bodies of water that they zones cool enough for fish.

    Or a word of two kinds
    Of plants and animals some adapted Constant day or constant night and Can't under how life could adapt to regular shifting of night &day and tink being Tidley locked is one of Extremly rare condisions for life.

    What makes you Speciel isn't the same thing that makes everyone Speciel.

  9. If Natural Rust ironoxied is means plate tecnically then platecnocally Mars's Very surface Is Proof it had play tectonics

  10. "Future moonwalkers.."

    Yeah yeah.. the moonwalk is fine, but this time of year, I think a Thriller dance would be more appropriate.

  11. – It won't go in further…
    – Let's push it!

    I wonder if somebody had that idea straight away. They're probably walking around NASA saying 'I told you so' to everyone. 😀

  12. I just want to let you guys know how much I appreciate your channel l. I’m no scientist, I’m just a goofy stoner who loves to learn. Thank you guys for continuing to educate the masses. ❤️??

  13. Screaming. Hellfire. The end is here. Innocence dying.
    zooms out to an observatory on earth
    "Wow, that planet just like– exploded, that sure is neat."

  14. Yeah sure an all female walk is cool and all…..but when a the first dog walk on the moon? What are the possibilities they can fetch the biggest and bestest of sticks?

  15. those new suits are gross and ugly, completely disagree with the thought that they are cool.

    They dont look very easy to move in either.

  16. The Mole isn't the only one that relies on friction and has trouble grabbing hold. And leaning on the side won't do for long. You really just need a new and larger tool.

  17. "Search for planets in the process of being destroyed…"

    So, some alien astronomer is looking through a telescope at us?

  18. Great channel and love this episode! But gotta say: Inequeties for female astronauts, give me a break! NASA making suits that fit more body forms is smart business on it's own, you don't need to include a left leaning story about fighting inequality that doesn't exist. I'm sure the old bigger suits didn't fit smaller men either. Females might actually be better choice for a Mars mission since they are lighter and require less calories. I get a feeling that may have been the primary driver behind the new suit's design since NASA isn't in the "fighting inequeties" business! Just my two cents, leave the modern day politics out of a science show.

  19. I think its hard to say theres an inequity problem in NASA when the female commander of that mission said that its ridiculous to make that claim, it was her desicion and people should focus on areas where there is actual inequity. People are ignoring a genius female astronaut to make victims of the women who are the exact opposite of that. I mean the irony of this situation is cartoonish. The space walk was a stupid boring routine maintenance mission and the female commander made one of her male underlings do it because it was the easiest solution. She sounds like a queen to me. A smart one too.

  20. Hey folks at Scishow Space! I have a question for you. Why has TESS not discovered hundreds or thousands of exoplanets so far? I thought it was expected to discover at least 10 000, and it's been operational for over a year and doing actual science and observations for about a year, and it's over halfway through it projected mission duration. Does the data just takes YEARS of sifting through, or are we finding less exoplanets than expected? Thanks! Much love from Canada.

  21. I know it fits the narration well, but that spacesuit problem on the ISS was because the Astronaut discovered she was more comfortable in a medium size torso than large size. There was a second medium on board but no time to refit the suit with all testing. This would have been the same problem with a male. I think a one-size-fits-all approach is wrong, since eva tasks will become more komplex and astronauts will be more selected by skill and less by standard body proportions 😉 The suits should be made with scaleability in mind.

  22. "Planets seem to be made up of rock that is a lot like the rock you might pick up in your back yard"

    Boy I really hope he's talking about the fossilized seashell rocky thingers I have laying around.

  23. 4:17 So as a non english speaker can you say the space suit is used in a test drive or can you just wear it and walk in it? Asking because if you look at it as its own vehicle you could argue that you drive in a spacesuit when jetting around the ISS.

  24. Next moon landing… Can't wait for the deniers attempt to debunk a livestream of the entire mission from start to finish with multiple modern cameras.

  25. No Phaser beams. No Photon Torpedoes. No Borg cutting beams. Just a drawf star. sighs disappointed.
    I thought the US Military had more weaponry to destroy exoplanets. LOL

  26. That reference to the first planned all female spacewalk at around 3:30 was really misleading, one of the women had just recently discovered that she fit better in the same size as the other woman when they had thought they fit best in different sizes and they just didn't have two of that size assembled at the time. The reference in this video almost made it sound like they didn't have one of the proper size at all. The new suits would fit everyone better, not just women who hadn't figured out which of the existing ones fit best, there are a lot of fitment issues with the current suits, that just wasn't a good way to explain them.

  27. I was thinking about The Big Bang and the measurement that this happened approx. 13.8 billion years ago. It is possible that expansion was in excess of the speed of light at least for an undetermined amount of time. So the Universe is Approx. 27.6 billion light years across. If it started from a central point at the same time, but the individual galaxies continued away from the center at differing speeds, would this still not leave an central void expanding from the center of the Big Bang? Would this be a Spherical Universe? Could we determine the approx. location of the Big Bang in relation to the inside of the void? If there is no void, does that mean that it is still Generating Matter? Also could that make it a White Hole, spewing mater into our universe? Sorry if I am remiss in posing my question, based upon my education. I have named my theory " The Hollow Universe ". Mainly because if it where an Explosion in the middle of nothing it would promulgate in all directions unless. acted on by an outside force.

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