Top network posts
- 17 Age of the universe and time dilation
- 17 Does a black hole become a normal star again?
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- 10 What is the general relativity explanation for why objects at the center of the Earth are weightless?
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- 8 Could undiscovered smaller black holes within galaxies be an explanation for dark matter?
- 6 Why is the letter *z* customarily used to denote redshift?
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