Gravity does some weird things to the universe. The power of gravity bends light, which means that the objects astronomers are looking at might not actually be where they appear to be. Scientists call this bizarreness gravitational lensing.
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NASA cannot bring birds into space because birds need gravity to swallow.
NASA will pay you $15,000 to lay in bed for 90 days, measuring the effects of zero gravity on your body.
In the 1960′s, it was discovered that Canada had lower gravity then other parts of the world.