Quote:
Originally Posted by MattyC
The Andromeda galaxy is 2.5 million light years away. Meaning when astronomers look at photographs of it, they are seeing what the galaxy looked like 2.5 million years ago. For all we know the thing could be freaking gone!
also....on Jupiter there exists metallic Hydrogen. The conditions under which this is created are so extreme that it cannot be recreated on earth in any way.
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Are you in Astro 207 at U of C? haha.