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what is a billion? trillion?
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50 Billion Suns! -The Biggest Single Object in the Universe !
Started by neilepBoard Physics, Astronomy & Cosmology |
Replies: 113 Views: 63538 |
14/05/2009 17:00:57 by Fortran |
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Can the Universe really form over 70 sextillion stars in 13.7 billion years?
Started by Harry CostasBoard Physics, Astronomy & Cosmology |
Replies: 40 Views: 26289 |
19/07/2009 11:22:18 by BenV |
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Where was Earth when a photon left a galaxy X>4 billion years ago?
Started by KozmykBoard Physics, Astronomy & Cosmology |
Replies: 2 Views: 1930 |
19/08/2021 14:19:58 by yor_on |
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Two Thirds Sea, One Third Land, Earth's a 6 Billion Man Band !
Started by neilepBoard The Environment |
Replies: 21 Views: 18475 |
20/09/2008 13:32:15 by ukmicky |
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Why can we still detect echoes of the Big Bang from 13.8 billion years ago?
Started by thedocBoard Physics, Astronomy & Cosmology |
Replies: 5 Views: 6007 |
27/04/2015 00:13:37 by Bill S |