Does every black hole contain a singularity?
Does sound travel faster in space?
Does the influence of gravity extend out forever?
Galaxies look stationary, so why do scientists say that they rotate?
Have aliens ever visited earth?
Have astronomers ever observed a violet shift like they have blue shifts and red shifts?
How bright is a laser beam when viewed from the side?
How can astronomers know things for certain since they only look at space from one vantage point?
How can there be anything left in the universe? Don't black holes suck everything in?
How can you cancel out the jolt of a quick start?
How can you tell a black hole made out of antimatter from a black hole made out of matter?
How do space probes make it past the asteroid belt without crashing into asteroids?
How do space ships fly faster than light?
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Explanation:
The money spent on probes to distant planets would be better invested in the people of our own planet. A world free from disease, a world where no-one lives in hunger, would be a truly great achievement. The exploitation of space has directly changed our world. Space exploration has also led to many indirect benefits.
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