COMMENTS:
Voted : 4
Just shooting in the dark here. Matter-antimatter, dark matter-dark antimatter. It may interest you to know that an alternative hypothesis for the anomalous rotational speeds of outer stars in galaxies does not require the existence of dark matter. In much the same way that relativity requires a modification of Newton's equations at high speed, Modified Newtonian Dynamics (MOND) requires a modification to them at low accelerations and introduces a rotational constant. Look up Mordecai Milgrom and MOND.
^That's not even getting into weird forms of matter (quarks up, down, top and bottom). And who knows what dark matter is?
Voted : 4
Oh, I'll guess 4
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