/u/scrappyisachamp's posts in /r/askscience
If our universe were totally empty except for two atoms, would the two eventfully collide due to gravity?
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When I'm in my room with the lights on and my phone is on the other side of the room, when I turn the lights off I can easily walk over and pick up my phone even though I can't see. Why is this?
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Is the heat we feel from the sun thermal radiation directly from it, or some other type of radiation that is converted to eat when it reaches here?
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