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Name the first piece of evidence supporting the Big Bang theory
The redshift of distant galaxies indicating the universe is expanding
Name the second piece of evidence supporting the Big Bang theory
The presence of Cosmic Microwave Background CMB radiation throughout the universe
State one way a black hole can be identified using gravity
By observing the immense gravitational pull it exerts on nearby stars or gas
State one way a black hole can be identified using radiation
By detecting powerful X-ray emissions from the superheated accretion disk of matter swirling into it