/u/SnailHunter's posts in /r/askscience
Conceptually, could a telescope be built to see a planet in another star system in detail? What about in another galaxy?
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What is the significance of drawing a distinction between inertial and gravitational mass? And why is it seen as perplexing that they're equal?
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When I pick up an insect, does it realize that I'm "different" from the inanimate scenery it's used to dealing with?
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If you used three laser beams to create a triangle in a strong gravitational field, would you always measure the sum of its angles to be different from 180°?
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In a synapse, how does the axon terminal stay put relative to the post-synaptic cell if the two aren't touching? What is holding it in place?
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If gravity is just the curvature of spacetime, then why do we think it would unite with other forces in extreme cases? Isn't it fundamentally a different thing?
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If the anisotropies in the CMB are what led to galaxies, wouldn't that mean that the galaxies are now existing in front of their respective anisotropies, and if so, how do we know the microwave fluctuations (anisotropies) we're seeing don't just come from the galaxies themselves?
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