askscience

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How long is it likely to be until it will make more sense to build space telescopes in space rather than make them on Earth?	1
Why do some astrophysics books say that all motion is relative and that it is impossible to know if a body is "truly" at rest as compared to the background of space, if we also know that nothing can move through space faster than the speed of light?	1
Is “destroying” water likely to ever be a feasible way to combat rising sea levels? Could we separate enough H2O molecules into oxygen (for breathing) and hydrogen (for fuel) to lower sea levels worldwide?	1
If time itself passes more slowly in certain regions of space, near immensely dense objects, are there regions of space where “only” 1 billion years has passed from the local perspective? Less? More?	1
Is drying clothes on the delicate setting better for the clothes and how does the energy usage compare?	1
How many "static tests" of rockets on the ground facing the same direction would it take to speed up the rotation of the Earth noticably?	1
Orbital re-entry always seems to be an extremely dangerous high speed high temperature maneuver but does it have to be that way? If a spaceship has enough propellant and could slow itself down sufficiently, it could just fall straight down through the atmosphere, right?	1
Why do batteries seem to stay "fresh" in the packaging for years but if I leave them in a toy for a year without using it, they frequently leak/corrode?	1
Can any experts weigh in on this Indigogo campaign proposing to build a Self-levitating reactionless thruster?	1
When I open the window shade in the morning, how many photons stream in per second? Are we talking million, billions, trillions, or more?	1

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