Cosmos

What does an Expanding Universe Mean?

The expanding universe is humanity's monumental discovery. Beginning infinitesimally small, the universe has become majestically large. How could this happen? What could this mean? Will the universe expand forever? Why is the expansion accelerating? Will there be a 'Big Rip'? Or will the laws of physics change, causing a re-collapse, a 'Big Crunch'?

 

What does an Expanding Universe Mean?

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