Dark matter is composed of particles that do not absorb, reflect, or emit light, so they cannot be detected by observing electromagnetic radiation. Dark matter is material that cannot be seen directly. ... Scientists believe that dark matter may account for the unexplained motions of stars within galaxies.
Via: @thecosmologicalway
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If you love physics, you must follow us. If you don't love physics, follow us and you'll start loving physics
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Check out our eBook in the link of the bio. It is for a limited time 50% off now. (a free sample is also present to examine the content, but we're sure you'll be blown away)
The eBook contains 15 physics theories and facts that are elegantly and simply explained for the general reader. You can have a full understanding of quantum mechanics for example.
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