/u/TomasTTEngin's posts in /r/askscience
After a child is conceived, as the cells replicate, for how long does some physical DNA from the father remain?
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If the universe is constantly expanding, does that mean we are further away from other stars planets and galaxies than before? And does that mean our chances of contact with other life are falling?
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If we add up the earth's rotation, its orbit, any movement of our solar system and movement of our galaxy, how fast sre we really travelling when we are sitting still?
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