Question

What is dark matter?
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Answer 1

Dark matter :

Dark matter, a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity. Dark matter makes up 30.1 percent of the matter-energy composition of the universe; the rest is dark energy (69.4 percent) and

“ordinary” visible matter (0.5 percent).

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Answer 2

Explanation:

The first Olympic Games took place in the 8th century B.C. in Olympia, Greece. ... However, the athletic tradition was resurrected about 1500 years later: The first modern Olympics were held in 1896 in Greece. 3 3. In ancient Greece, athletes didn't worry about sponsorship, protection, or fashion – they competed naked.