Word: spaces
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Dates: during 2000-2009
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...space travel survivable at all? Because all speed is relative. A satellite orbiting Earth may be moving at 17,500 m.p.h., but so is every other object in the same orbital corridor. Relative to one another, they're standing still. If one happened to speed up to 17,505 m.p.h., the most it could do is nudge another ship at 5 m.p.h. Attaining orbit is like entering an expressway: the tricky part is merging; once you're there, all you have to do is maintain your speed, and you'll be fine. (Read "Are We Bringing Our Germs to Mars...
...even a small satellite into orbit, after all, much more than just the satellite comes along for the ride. There are spent booster stages, discarded adapter rings, bolts and panels and bits of insulation and even chips of paint being shed in the process. (See pictures of Earth from space...
...think we will almost certainly see hundreds if not thousands of pieces of tracked debris," says Mark Matney, an orbital-debris scientist at NASA's Johnson Space Center. "It all depends on how efficient the impact was. Was it a glancing blow or a full body...
...space moments since Sputnik...
...pictures of five nations' space programs...