Space & Astronomy
July 22, 2012 ·
14 comments
Image Credit: NASA
"Even though we see some discs existing at that time, they're very thick and puffy, whereas the Milky Way has an... amount of random motion only about a tenth or so the amount of ordered rotation, giving rise to a very thin disc," said study author David Law.
Source: BBC News | Comments (14)
Ancient spiral galaxy puzzles astronomers
By T.K. RandallJuly 22, 2012 ·
14 comments
Image Credit: NASA
A spiral galaxy dating back to just 3 billion years after the Big Bang has been photographed by Hubble.
The discovery is particularly interesting because it appears to be a spiral galaxy at a time when the universe was considered too chaotic for such a thing to have formed. Astronomers now believe that an orbiting dwarf galaxy may have helped provide the necessary gravitational 'kick' to enable it to form in to a spiral."Even though we see some discs existing at that time, they're very thick and puffy, whereas the Milky Way has an... amount of random motion only about a tenth or so the amount of ordered rotation, giving rise to a very thin disc," said study author David Law.
Astronomers have spotted the earliest known spiral galaxy, dating to just three billion years after the Big Bang.
Source: BBC News | Comments (14)
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