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Re: Yahoo! News Story - Oh, My! When Worlds Really Collide - Yahoo! News

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  • mahtezcatpoc
    ... I think I ll call it Velikovskaya (after Immanuel Velikovsky). http://en.wikipedia.org/wiki/BD_%2B20%C2%B0307 Right ascension 01h 54m 50.3443s
    Message 1 of 4 , Oct 7, 2008
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      --- In thefixedstars@yahoogroups.com, "mahtezcatpoc"
      <mahtezcatpoc@...> wrote:
      >
      > I'll try to have the coordinates for BD+20 307 shortly.
      >


      I think I'll call it Velikovskaya (after Immanuel Velikovsky).

      http://en.wikipedia.org/wiki/BD_%2B20%C2%B0307

      "Right ascension 01h 54m 50.3443s
      Declination +21° 18' 22.477"' "

      It's in Aries, at zodiacal coordinates 5 Taurus 01.


      Mark A. Holmes


      >
      > --- In thefixedstars@yahoogroups.com, Mark Andrew Holmes
      > <mahtezcatpoc@> wrote:
      > >
      > >
      > >
      > > --- On Sun, 9/28/08, Mark Holmes <mahtezcatpoc@> wrote:
      > >
      > > From: Mark Holmes <mahtezcatpoc@>
      > > Subject: [thefixedstars] Yahoo! News Story - Oh, My! When Worlds
      > Really Collide - Yahoo! News
      > > To: thefixedstars@yahoogroups.com, Centaurs2@yahoogroups.com
      > > Date: Sunday, September 28, 2008, 11:35 AM
      > >
      > >
      > >
      > >
      > >
      > >
      > > Mark Holmes (mahtezcatpoc@ yahoo.com) has sent you a news article.
      > > (Email address has not been verified.)
      > > ------------ --------- --------- --------- --------- --------- -
      > > Personal message:
      > >
      > > Oh, My! When Worlds Really Collide - Yahoo! News
      > >
      > > http://news. yahoo.com/ s/space/20080923 /sc_space/ ohmywhenworldsre
      > allycollide
      > >
      > >
      > > Mark A. Holmes
      > >
      > >
      > > Begin story.--
      > >
      > >
      > > Oh, My! When Worlds Really Collide Robert Roy Britt
      > > Senior Science Writer
      > > SPACE.com
      > > Tue Sep 23, 5:45 PM ET
      > >
      > >
      > >
      > > Around a distant star, two planets similar to Earth collided and
      > were destroyed, astronomers said today.
      > >
      > >
      > > The somewhat speculative scenario is based on the leftovers: a ring
      > of debris around the star that includes a million times more dust than
      > now circles our sun.
      > >
      > >
      > > "It's as if Earth and Venus collided," said researcher Benjamin
      > Zuckerman, UCLA professor of physics and astronomy. "Astronomers have
      > never seen anything like this before. Apparently, major catastrophic
      > collisions can take place in a fully mature planetary system."
      > >
      > >
      > > The researchers used X-ray data and other observations of a star
      > called BD+20 307. They had assumed it was a young star, just a few
      > hundred million years old, and the debris was leftovers from planet
      > formation. But earlier this year, another study showed the star was
      > actually a binary pair, and that the stars were billions of years old.
      > >
      > >
      > > So why all the debris? The dust is about the same distance from the
      > stellar pair as Earth is from the sun, and given current theories of
      > planet formation, that debris should have been swept up into planets
      > by now or pushed away by stellar radiation. It simply shouldn't be
      there.
      > >
      > >
      > > A colossal collision must have created all that dust sometime in the
      > past few hundred thousand years and perhaps much more recently, the
      > astronomers figure.
      > >
      > >
      > > It would have been a whopper.
      > >
      > >
      > > "If any life was present on either planet, the massive collision
      > would have wiped out everything in a matter of minutes ��" the
      > ultimate extinction event," said Gregory Henry, an astronomer at
      > Tennessee State University (TSU) who worked with Zuckerman on the
      > research. "A massive disk of infrared-emitting dust circling the star
      > provides silent testimony to this sad fate."
      > >
      > >
      > > To put the collision into context, Zuckerman said: "By contrast with
      > the massive crash in the BD+20 307 system, the collision of an
      > asteroid with Earth 65 million years ago, the most favored explanation
      > for the final demise of the dinosaurs, was a mere pipsqueak."
      > >
      > >
      > > The work was funded by the National Science Foundation and NASA, and
      > also by TSU and the State of Tennessee. It will be detailed in the
      > December issue of the Astrophysical Journal.
      > >
      > >
      > > The conclusion has the astronomers thinking about home.
      > >
      > >
      > > "This poses two very interesting questions," said TSU astronomer
      > Francis Fekel. "How do planetary orbits become destabilized in such an
      > old, mature system, and could such a collision happen in our own solar
      > system?"
      > >
      > >
      > > It has already happened here, in fact. Our moon is thought to have
      > been created when a Mars-sized object slammed into Earth. Henry points
      > out that computer models done by other researchers suggest that as
      > planets in our solar system migrate over time, there is a "small
      > probability for collisions of Mercury with Earth or Venus sometime in
      > the next billion years or more."
      > >
      > >
      > > Of course by then the sun will have expanded and we might be toast
      > anyway.
      > >
      > > --End story.
      > >
      >
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