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Why does the sun take so long to burn out?

Started by Ellingson, Kenneth L

Why isn't the asteroid belt a planet?

Started by Greg Lorenz

What particles make gravity?

Started by Alex Havers

Where IS the Universe?

Started by deep

Why is nuclear waste still radioactive?

Started by therodgers21

How do non-rotating black holes form?

Started by Renee Roberts

Is there a local example of dark matter?

Started by Christine Carey


Started by miriam0920


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