In 1930s that our own Milky Way galaxy behaved as if it contained more matter than could be seen with telescopes. This puzzled astronomers, astro-physicists. So, this non-luminous matter became known as "dark matter" and we now know that over 90% of the matter in the entire universe is dark.
What is this dark matter made of? And what happens if dark matter and regular matter collide or put together in laboratory, for instance? When people talk of dark matter, they think of the milky way or stars, but what about on earth? is there evidence of dark matter on earth? Is there an active search for it?
2007-12-28
13:13:00
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5 answers
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Anonymous
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Physics