• Wednesday, November 13, 2019

New 'super-Earth' discovered by scientists

Discussion in 'World Affairs' started by TruthTheOnlyDefense, Sep 12, 2019.

  1. TruthTheOnlyDefense

    TruthTheOnlyDefense BANNED

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    In a tantalizing first, scientists have discovered water at a planet outside our solar system that has temperatures suitable for life.

    Two research groups announced this week that they've found water vapor in the atmosphere of a planet 110 light-years away in the constellation Leo. This so-called Super Earth is just the right distance from its star to conceivably harbor life.

    It's the only exoplanet known so far to have both water and temperatures needed for life, the University College London team reported in the journal Nature Astronomy on Wednesday. But lead author Angelos Tsiaras stressed, "This is definitely not a second Earth."

    [​IMG]
    Exoplanet K2-18b, foreground, its host star and an accompanying planet in this system. On Wednesday, the scientists announced they discovered water on the planet outside our solar system that has temperatures suitable for life. (M. Kornmesser/ESA/Hubble via AP) (AP)

    Its star and atmosphere are so different than ours, "Earth-like conditions are not possible," Tsiaras told reporters. "The only question that we're trying to ask here, and we're pushing forward, is the question of habitability."

    A Canadian-led team announced similar findings Tuesday. In a paper just submitted to the Astronomical Journal for publication, these scientists suggest it might even be raining there.

    "This represents the biggest step yet taken toward our ultimate goal of finding life on other planets, of proving that we are not alone," the study's lead astronomer, Bjorn Benneke of the University of Montreal, said in a statement.

    Discovered in 2015, the planet known as K2-18b is twice the size of Earth with eight times the mass. While it's thought to be rocky, no one knows if water's flowing on the surface. Its star, a red dwarf, is considerably smaller and cooler than our sun, a yellow dwarf, and its atmosphere is also different than ours.

    Nonetheless, Tsiaras said K2-18b could help determine, "Is the Earth unique?"

    The results are doubly exciting, Tsiaras noted, given this is not only the first Super Earth with water detected in its atmosphere but the planet also resides within the habitable zone of its star.

    The research teams used archived data from the Hubble Space Telescope and other spacecraft to analyze the planet's atmosphere. Further observations are needed to determine whether the planet is indeed a true water world, using next-generation observatories like

    NASA's James Webb Space Telescope and the European Space Agency's Ariel, both due to launch in the 2020s.

    Future telescopes on Earth and in space should help uncover more Super Earths orbiting red dwarf stars — believed to be the most common planets and stars in our Milky Way galaxy. Super Earths are defined as having a mass greater than Earth but less than gas giants like Uranus and Neptune; more than 1,260 have been confirmed to date.

    [​IMG]
    Exoplanet (AAP/Getty)

    While water already has been identified in the atmospheres of hot gas giants circling other stars, the latest findings represent the first detection of water vapor in the atmosphere of another type of exoplanet, Tsiaras said.

    A NASA tally currently lists more than 4,000 confirmed exoplanets and another 4,000 potential candidates. Most have been detected using the transit method, where telescopes watch for a slight, fleeting dimming of a star's light as a planet passes in the field of view.

    For now, scientists know K2-18b takes 33 days to orbit its star, so one year there is one month here. At this distance, temperatures range from minus-100 degrees to 116 degrees Fahrenheit (minus 73 degrees to 47 degrees Celsius.)

    The star, glowing red in the day sky, is believed to bombard the planet with radiation harsh enough to quickly inflict any human visitors with cancer, although "life there may have evolved differently" in order to survive, noted the London team's Ingo Waldmann. A sister planet, meanwhile, orbits closer to the star and is likely too hot to be in the habitable zone.

    The cloud cover isn't too thick on K2-18b, otherwise it would have obscured the water vapor in the atmosphere, according to the scientists.

    The surface, meanwhile, could be wet or dry. The London data suggest water vapor makes up anywhere between 0.01% and 50% of the atmosphere — "quite a big range," Waldmann acknowledged. Either way, given the planet's mass, it would be difficult to walk on the surface.

    "Maybe not quite your vacation destination just yet," Waldmann joked.

    © Nine Digital Pty Ltd 2019

    https://www.9news.com.au/national/e...r-system/d4390c45-21f6-448f-84a7-40d52ffd84d0
     
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  2. Angry Easterling

    Angry Easterling BANNED

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    won't the density matter regardless of its size?
     
  3. BRAVO_

    BRAVO_ FULL MEMBER

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    yes .. now india will send chandryan 3 to this new planet which is just 110 light years away :lol::lol:
     
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  4. zeeshe100

    zeeshe100 FULL MEMBER

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    the world we see in the sky is an illusion it is not possible for humans to even cross the solar system..they can find whatever they want but this earth will end one day with all of its shit
     
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  5. Yaseen1

    Yaseen1 SENIOR MEMBER

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    Such planets are found many times in past but no one is able to reach and live at such planets
     
  6. KAL-EL

    KAL-EL PDF THINK TANK: ANALYST

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    It might not be in our lifetime, but NASA will eventually have the warp ship ready.
     
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  7. Angry Easterling

    Angry Easterling BANNED

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    It will take centuries maybe millennia before we have a working Alcubierre drive.

    The risk is too high anyway. Who knows what or who we find out there. Next thing you know we run into a genocidal conglomerate of aliens whose leaders end up misinterpreting the records of a long lost galaxy spanning empire and try to exterminate humanity as a result.
     
  8. krash

    krash SENIOR MEMBER

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    Very importantly he said "mass" not size (volume). What he meant was that due to the mass of the planet the gravitational forces on its surface would make it very difficult for us on its surface. The density does not factor into determining the gravitational force of a planet.


    And so thought man only a hundred years ago when it came to leaving planet earth.
     
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  9. GumNaam

    GumNaam SENIOR MEMBER

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    @BringHarmony @kris @abcxyz0000 @zip

    disregard EVERYTHING I said on the https://defence.pk/pdf/threads/the-moon-ah-the-moon.634879 thread and let's GO to this planet SUPER-EARTH...its only 110 light years away...all it'll cost us is 400 years of space travel time (or 110 years if we travel at the speed of light) plus a piddly little amount of $350 trillion; I say $50 trillion towards researching light speed travel NOW, starving people and their kids can go to hell, sucks being them, they shouldn't have been born in india or africa so tough noogies...well worth it yes? LET'S DO THIS...for science! :happy:
     
    Last edited: Sep 12, 2019
  10. krash

    krash SENIOR MEMBER

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    Not to be one of those guys at the party but, if you are travelling at the speed of light and it's a 110 light years away then it would take you only 110 years to reach it. Not 400.
     
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  11. GumNaam

    GumNaam SENIOR MEMBER

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    fixed. :p:
    y' DO realize I didn't bother with the calculations on account of purposefully wanting to exaggerate and be sarcastic. :sarcastic:
     
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  12. undercover JIX

    undercover JIX SENIOR MEMBER

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    Old news, Indians already discovered since vedic times and had regular visits for .....something..
     
  13. GumNaam

    GumNaam SENIOR MEMBER

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    you DO realize that we FIRST have to figure what gravity is and also figure out how to NOT fall apart as we approach the speed of light before we could get to the warp speed point. no body knows what gravity is, we know know it is there and has a magnitude to it. The fact is that the life as we know it NEEDS earth type of gravity to be alive, gravity generated due to centrifuge is NOT enough to maintain our DNA structure on a long term basis.
     
  14. krash

    krash SENIOR MEMBER

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    I know, I know. I'm just that guy at the party.


    Not true though. Ever since Einstein we know for a fact that gravity is the warping of the space-time fabric caused by mass.
     
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  15. newb3e

    newb3e SENIOR MEMBER

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    not just this new earth their is a map of whole universe with multiple earth like planet in vedas! beat that!
     
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