The Sun and Stars
Name: ryan a dean
Date: 1993 - 1999
When was the sun formed?
What's the closest star besides the sun to the earth
The sun was formed about 5 billion years ago (around the same
time the earth formed).
The closest star besides the sun to the earth is Proxima Centauri
which is part of three stars that orbit about one another, so
one of the others will be the closest star at some point in the future.
The distance to these is about 4 light-years.
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Update: June 2012