My trivia and facts on the Universe. Asteroids, black holes, distances, galaxies, light, Mars rovers, Moon landings, stars, Titan, Voyager program, and other Universe trivia and facts.
Sunday, February 13, 2011
Dark matter
Dark matter makes up approximately 25% of the Universe. It is matter in the Universe that cannot be seen, but is detected by gravitational effects on other bodies.
1 comment:
i like this topic dark matter and it's well express....keep writing...
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