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Keyword: explodingplanet

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  • Oldest meteorite ever found: 4.6 BILLION-year-old space rock discovered in the Sahara could shed light on the early solar system

    04/16/2021 11:25:32 PM PDT · by blueplum · 37 replies
    The Daily Mail UK ^ | 16 Apr 2021 | STACY LIBERATORE
    An ancient, meteorite, or achondrite, was discovered in the Sahara desert last year that has now been identified as chunk from a protoplanet that formed before Earth came into existence. The space rock, named EC 002, dates back 4.6 billion years and consists mostly of volcanic rock, leading experts to believe it came from the crust of a very early planet.... ...no asteroid shares the spectral features of EC 002, indicating that almost all of these bodies have disappeared, either because they went on to form the building blocks of larger bodies or planets or were simply destroyed.'
  • Violent Past: Young sun withstood a supernova blast

    10/27/2013 6:03:53 PM PDT · by SunkenCiv · 68 replies
    Science News ^ | May 23, 2007 | Ron Cowen
    Martin Bizzarro of the University of Copenhagen and his colleagues set out to determine the amount of iron in the early solar system. To do so, they measured nickel-60, a decay product of iron-60, in eight meteorites known to have formed at different times during the first 3 million years of the solar system. The meteorites that formed more than about a million years after the start of the solar system contain significantly more nickel-60 than do those that formed earlier, the team found. In a neighborhood of young stars, only a supernova could have produced iron-60, the parent of...
  • Long-Destroyed Fifth Planet May Have Caused Lunar Cataclysm, Researchers Say

    03/25/2002 2:42:10 PM PST · by vannrox · 155 replies · 4,757+ views
    SPACE dot COM ^ | 18 March 2002 ,posted: 03:00 pm ET | By Leonard David, Senior Space Writer
    Asteroid Vesta: The 10th Planet? Discovery Brightens Odds of Finding Another Pluto Nemesis: The Million Dollar Question HOUSTON, TEXAS -- Our solar system may have had a fifth terrestrial planet, one that was swallowed up by the Sun. But before it was destroyed, the now missing-in-action world made a mess of things. Space scientists John Chambers and Jack Lissauer of NASA's Ames Research Center hypothesize that along with Mercury, Venus, Earth, and Mars -- the terrestrial, rocky planets -- there was a fifth terrestrial world, likely just outside of Mars's orbit and before the inner asteroid belt. Moreover, Planet V...
  • We're going on a planet hunt

    04/05/2006 7:53:38 PM PDT · by KevinDavis · 39 replies · 814+ views
    EurekAlert ^ | 04/05/06 | Claire Bowles
    A FIFTH terrestrial planet may once have orbited between Mars and Jupiter. Although gravitational disturbances would have sent the planet hurtling into the sun or out into space long ago, traces of this long-gone world may still be visible in part of the asteroid belt today. Recent simulations have suggested that the gas giants of our solar system formed with circular orbits but moved into their more elongated paths about 4 billion years ago – 700 million years after the solar system formed. While the gas giants were in circular orbits, rocky planets should have formed in stable orbits out...