1,284 New Exoplanets, and Tsunamis on Mars!

Last week, astronomers working with the Kepler
space telescope announced that they’d confirmed 1,284 new exoplanets at once. Which is a lot of planets! In fact, it’s the biggest collection of
planets ever confirmed at once — thanks to a new method developed by the researchers,
who published their findings in The Astrophysical Journal. Astronomers usually confirm exoplanets a few
at a time, going through the data for each one by hand. But for this study, they created a computer
program to statistically analyze all 7,056 Kepler Objects of Interest, or KOIs — things
that might be exoplanets. It’s hard to detect planets around other
stars using direct imaging, because the glare from the star outshines any planets orbiting
it. Instead, Kepler monitors the light from a
star to look for potential exoplanets — because when a planet passes in front of its parent
star, it blocks some of the light. But a dip in the measured light doesn’t
always mean a planet is blocking the starlight. For example, it could be a binary star system,
with a second star passing in front of the first and changing the spectrum of the light
we see from Earth. Until now, astronomers have analyzed the evidence
for each KOI individually, considering all the options and coming up with a probability
that each possible exoplanet is an actual exoplanet. If the odds it’s a planet are above 99%,
it’s considered confirmed. Computer models have been developed to help
confirm exoplanets. But to work, they still needed the scientists to figure out and input
the properties of each host star, like its mass and radius. For this study, the astronomers came up with
a program that would analyze the host star, and then find the probability that the KOI
was an exoplanet. Using this method, they confirmed more than
a thousand new exoplanets, and identified 428 KOIs that are probably just false positives. That’s way faster than analyzing each of
them individually, but just as accurate! Of the newly-confirmed exoplanets, 550 of
them are the right size to be rocky planets. And 9 are within the habitable zones of their
parent stars — meaning that life as we know it might be able to survive there. That brings the total number of known exoplanets
in their stars’ habitable zones up to 21. So now astronomers have a new set of exoplanets
to study, and a much quicker way to check if KOIs are actually planets orbiting stars. Meanwhile, we’re still learning new things
about the planets orbiting our own star. Like yesterday, when a group of astronomers
announced that mega-tsunamis on Mars probably helped shape the Red Planet’s terrain, in
a paper published in Nature Scientific Reports. Tsunamis on Mars! The researchers were trying to figure out
what formed the northern plains on Mars. For a long time, astronomers thought that
the plains were shaped around 3.4 billion years ago by a huge Martian ocean. Problem is, oceans tend to create shorelines
with consistent elevations. But the northern plains have geologic features at all kinds
of different elevations. Using a computer model of Martian geology,
the team found that huge tsunamis could have created those features, washing water out
from the ocean in giant, 120-meter waves. Asteroid impacts that formed at least two
of the craters in the northern plains could have caused these tsunamis — probably about
3 million years apart. The more recent tsunami would have spread
lots of water across the plains, which would have frozen into water ice. Because the ancient Martian ocean was so salty,
it probably took tens of millions of years to freeze, which would have been plenty of
time for ancient Martian life to establish an ecosystem. After all, life can survive in salty liquid
water here on Earth. So these ancient ice water deposits could
be a great place to look for signs of ancient life — and some of them aren’t too far
from where NASA’s Pathfinder mission landed in 1997. Might be time for another trip. Thanks for watching this episode of SciShow
Space News, and thanks especially to our patrons on Patreon who help make this show possible.
If you want to help us keep making videos like this, just go to patreon.com/scishow.
And don’t forget to go to youtube.com/scishowspace and subscribe!

100 thoughts on “1,284 New Exoplanets, and Tsunamis on Mars!

  1. the thing that i still can't comprehend is how many star systems have planets orbiting at just right angle so they cross the right angle of of star at we look at, how little probable is that and well, look at it, so many… SO MANY

  2. how… how do we confirm if it's an exoplanet… I mean, we won't really know unless/until we actually visit them… right?

  3. great news …. now it's even easier for me to pick the exoplanet that match my style and pay for it with my galactic bank app .. àaaahhh life is so easy

  4. Why looking for other planets ? if we cannot go explore them … maybe sending them messages telling " hey look here !!! " could do but by the time it would arrive we could be doomed. We should go on in helping our planet instead…after all it is the only one we have for the moment and making a mess on it…

  5. holy shit, 9 new (possibly) habitable exoplanets. start up the rocket engines, we're gonna colonize boys!

  6. Suddenly life doesn't seem so special any more. "habitable" planets are popping up everywhere.

  7. Although, you, are-not doing the research yourself, they {NASA, ESA,,,}, should look at the differentiations betwixt maps of Mars, Visible, IR infrared, and Elevation, because—those maps do not entirely agree: Dark visible regions can't really be the tsunamis you mention because they're too uniform and there're no significant elevation differences that match.

  8. Is it just me or does anyone else hate this girl and her voice when she does this show?

  9. Is pathfinder still operational? I thought it got grilled by some stupid space pirate.

  10. Well, If you still think we're alone in the universe. U need some medication It's not evn a question anymore.

  11. That was amazing video showing astronomers discover thousand exoplanet everyday I didn't know astronomers naming crates,valleys other terrain parts on Pluto name after characters from film and tv show that's amazing what names they going to give on exoplanets or moons and its terrain landscape in future !?

  12. They discovered 9 new planets which may host life, which makes the total number 21, so the original amount was 10, rite?

  13. dude, thats bad ass. now we can just collect a shit ton of data and have computer programs process it in a fraction of the time.

  14. Great video! Super interesting and well presented. Keep up the good work guys.

  15. 3 1/2 minutes and you didn't blink once! Guess Caitlin doesn't have to worry about angel statues!

  16. What if a KOI has a 98.9% chance of being an exo planet? Is it considered a false positive then?

  17. Think we should start sending more rovers to different areas of mars

  18. Do not allow this comment to have an odd number of Likes.

  19. Have you gotten too close to our own star? Because you are absolutely radiant today!

  20. I love astronomy, and have been following this channel (in addition to multiple others, YouTube and elsewhere) for at least 3 years now, but I have to say, despite how interesting some of this stuff is, I am beginning to lose sight of the..point to all of it. Like, none of this stuff actually matters, and in reality, it's just an expensive waste of time by the government, who really should be more concerned with more pressing matters here in America. Idk, i guess I'm just growing tired of all the horrible stuff going on here [Earth].

  21. Coolest news I have heard about mars in a long while!!! Keep em' coming!

  22. Man, space rules. I want an exoplanet. lol.

    Also, as someone with long curly brown hair, props on the hair girl. Looks great! m/

  23. (im really sorry i shouldnt ask this) is she pregnant or is that just her shirt poofing out on the side?(im really sorry please forgive me i love you)

  24. Sorry to have to point this out, but there are an awful lot of "could haves" in this video and the discoveries announced. The mega-tsunami idea is a "best guess" with not much evidence or further research done to confirm the idea, so this announcement is most likely the usual "scientific studies say" hyperbole you get from a typical evening newscast.

    And as for the 1200+ planet discoveries, while it MAY be true I simply must point out that 99% of all computer programmers don't really know what they're doing and it's best to not rely on software to confirm these planets. Every piece of software ever written in history is chock-full of bugs and until someone actually does further studies on these 1200+ new planets I'll go with the idea that they might indeed be false positives. Sorry…but a decade of working with computer programmers and seeing first hand their utterly lazy work habits has taught me never to trust their software to work 100%, particularly when you're trying to be 99% sure about something.

  25. bigger tsunamis are also easier on a planet with 1/3 Earth's gravity

  26. the endo-star in your tummy is going to be a smart cookie! :p

  27. Our thoughts and prayers are with the poor martians….

  28. What would happen if two gas planets collided? Would it be catastrophic like with rocky planets or would they merge together?

  29. What happened with the thing that blocked 20% of the light of a star and people thought it was a Dyson sphere?

  30. that's a good presentation improvement: good job Caitlin! almost 1.300 planets at once? now that's some awesome improvement in data crunching! it should be applied to all the previous years data and we'd see a tenfold number of planets actually discovered…

  31. I like this new playlist. Flags are rarely just lists of colors and symbols. some have a history, and some states have a list of older flags that correspond to different eras.
    Our flag from example (Romania) has had quite a few alterations in the last centuries, and some of the iterations such as cutting a circle in the middle (where the communist party coat of arms once was) has become a symbol of freedom from tyranny.

  32. This sounds like its being recorded in a wet cave. You can hear all the cavey dripping noises in the backround.

  33. 3 of those 21 Planets have Life on them. 1 Of wich has Intelligent and 1 with Earth-Like Properties if it werent for the Extremely Dangerous Flora and Fauna (Exept one Plant: Jelly Tree, A Tree filled with a Jelly wich is Super Nutrtios … so much infact that in Raw Format its Unfit for Any Earthlike Lifeforms to Consume. The other 2 have a more Toxic atmosphere with the one with the Intelligent life has a Heaviely Polluted Atmosphere currently Deterraforming the Planet.

  34. Caitlin, you've come such a long way over the past year or two.  I love that you are one of the few on this channel that has reined in the extreme arm/hand movements that have been so annoying in SSS videos.  You'll always be my favorite!  🙂  Keep up the good work!

  35. Question: If there is practically nothing in space… what exactly is the thrust from a rocket engine pushing against to move a rocket forward? There are not enough molecules up there for a rocket to push against…. how do rockets move???

  36. i wonder if aliens look at our planet and categorize it as in their "habitable" zone.

  37. What's the scope of finding so many exo planets? Is it a race? We can't even go there for at least 500 years so I don't see the point
    Why don't we spend the budget on other things like going to Europa or Mars?

  38. She's an amazing women! So much enthusiasm and I've learned a new body language sign with my hand: 2:15

    Thanks for sharing these incredible news!

  39. why does there always have to be humour and big insane smiling people telling me science news like I'm a child just now becoming familiar with language?

  40. Watch those Drake equation variables clear up – and be very, very afraid… Spooky…

  41. You think there will ever be a day when exo planets will be auctioned off to public corporations?

  42. If we found another planet capable of sustaining human needs do you think it would be ok for us to go there (assuming we had the capability) and live?
    Let's also assume there is life there, something like the jurassic era.

  43. Caitlin……………………………………………………………………give me your boobies.

  44. They also found meth on a scientists ass crack, better send a land Rover you delusional nasatards

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