1 The Big Bang Theory explains
2 The theory of relativity happened in what century?
3 Approximately how old is the universe?
4 The Steady State theory also involves an expanding universe, except that it does not call for a universe with a beginning.
5 The Steady State theory also involves a beginning of the universe, except that it assumes that the universe is collapsing.
1 A shield volcano consists of
2 The largest volcano on Mars has the name
1 Stellar evolution is the process by which the ratio of Type-1 and Type-2 stars has changed since the big bang.
2 Stellar evolution is the process by which a star changes during its lifetime.
3 Most stars more massive than the Sun end their lives as Supernovae. copied verbatum
4 A black hole is defined as any object that absorbs all the light that strikes it
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