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(PhysOrg.com) -- A team of European astronomers has used ESO’s Very Large Telescope (VLT) to track down a star in the Milky Way that many thought was impossible. They discovered that this star is composed almost entirely of hydrogen and helium, with only remarkably small amounts of other chemical elements in it. This intriguing composition places it in the "forbidden zone" of a widely accepted theory of star formation, meaning that it should never have come into existence in the first place. The results will appear in the 1 September 2011 issue of the journal Nature.
The researchers also point out that this freakish star is probably not unique. “We have identified several more candidate stars that might have metal levels similar to, or even lower than, those in SDSS J102915+172927. We are now planning to observe them with the VLT to see if this is the case,” concludes Caffau.
Originally posted by XPLodER
i will ask the questions,
how can the current understanding of cosmology explain this star?
it should not have had time to condence under the current theories of gravity star formation and have the elements that it does,
xploderedit on 31-8-2011 by XPLodER because: add pic
A widely accepted theory predicts that stars like this, with low mass and extremely low quantities of metals, shouldn’t exist because the clouds of material from which they formed could never have condensed,”
Originally posted by Xeven
Too bad US is letting it's scientific endeavors die to budget woes while we keep feeding the killing machine.
Originally posted by Ophiuchus 13
reply to post by XPLodER
My bad I thought it was in local galaxy when I read
@A team of European astronomers has used ESO’s Very Large Telescope (VLT) to track down a star in the Milky Way that many thought was impossible.
I thought it was a local, please excuse.
At the centre of this picture is a very unremarkable looking faint star, too faint to be seen through all but the largest amateur telescopes. This ancient star, in the constellation of Leo (The Lion), is called SDSS J102915+172927 and has been found to have the lowest amount of elements heavier than helium of all stars yet studied. It has a mass smaller than that of the Sun and is probably more than 13 billion years old.
Originally posted by Farnhold
There is so much we do not know about universe, and not even planet Earth. Things are way too different than what they appear to be.
The star we have studied is extremely metal-poor, meaning it is very primitive. It could be one of the oldest stars ever found,” adds Lorenzo Monaco (ESO, Chile), also involved in the study.
Originally posted by Aeons
The star is obviously not impossible - the models are incorrect.
That's science. You find new information, you update your models.
More hydrogen and helium in a denser state than was expected. Perhaps the expansion of the Universe wasn't quite as fast as currently predicted, leaving denser accumulations of lighter elements.edit on 2011/8/31 by Aeons because: (no reason given)