ESA - Space for Kids - Our Universe - The Big Bang
Most astronomers believe the Universe began in a Big Bang about 14 billion years ago. At that time, the entire Universe was inside a bubble that was thousands of times smaller than a pinhead. It was hotter and denser than anything we can imagine.
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Hace 11 años
Today 12/09/13, we have homework for this week or the other week
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Hace 11 años
is interesting
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Hace 11 años
Look at this page !!!
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