General Relativity Q: What is Einstein’s equivalence principle? Q: What is gravitational lensing? Why is it useful...

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Physics

General Relativity

Q: What is Einstein’s equivalence principle?

Q: What is gravitational lensing? Why is it useful forcosmology?

Q: What is gravitational time dilation?

Q: What are MACHOs? What does the MACHO microlensing result meanfor dark matter in the Milky Way?

Q: What is the bullet cluster? How does it give evidence fordark matter and against modified gravity?

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