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• What would happen if a hole was drilled straight through the Earth from one side to the other and someone jumped in?

  Asked by tomatrondroid | 60 responses

• Would a lit match in zero-G be snuffed out from the smoke it produces?

  Asked by AstroChuck from iPhone | 15 responses

• How does gravitational slingshotting work?

  Asked by SmashTheState | 15 responses

• Why can't we just zipline between major cities?

  Asked by Ltryptophan | 21 responses

• Can you do the shuffle dance?

  Asked by LuckyGuy | 22 responses

• If a planet migrates into a new orbit, what exactly happens to its satellites?

  Asked by Qingu | 11 responses

• Could you kill an ordinary black hole by feeding it antimatter?

  Asked by ETpro | 12 responses

• As you get older, what sort of battles are you having with the law of gravity?

  Asked by Jeruba | 13 responses

• What would if feel like gravitationally at the center of the Earth?

  Asked by LostInParadise | 32 responses

• How healthy would a baby be, born in space?

  Asked by everephebe from iPhone | 11 responses

• What would we experience if the sun suddenly did not exist?

  Asked by tramnineteen | 45 responses

• Could we knock Earth out of its own orbit?

  Asked by Qingu | 14 responses

• Is it possible to do this in space?

  Asked by Steve_A | 27 responses

• Does an "escape velocity" exist in this situation (see details)

  Asked by PhiNotPi | 16 responses

• Gravity boots (inversion system)... do they work?

  Asked by Dr_C | 18 responses

• Can anything escape from a Black Hole?

  Asked by blueiiznh | 9 responses

• If we were to take all of the humans on Earth and tape them together, creating one big ball, how strong will our gravity be?

  Asked by jellyfish3232 | 12 responses

• How do you get married on the moon?

  Asked by girlofscience | 22 responses

• What are the chances that this would ever even be possible?

  Asked by Berserker | 17 responses

• Has anyone else been thinking about this?(Details.)

  Asked by MrGrimm888 | 10 responses

• Why don't stars clump together?

  Asked by GeorgeGee | 6 responses

• When the Black Holes swallow up all of the universes, then what?

  Asked by Hypocrisy_Central | 22 responses

• When very tiny microscopic fragile things fall from microscopic heights, do they break?

  Asked by Ltryptophan | 12 responses

• What is the terminal velocity of the moon crashing into Earth?

  Asked by talljasperman | 4 responses

• What does DS9 orbit?

  Asked by wildpotato | 6 responses

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