visited by UFOs? Travel between the stars in any reasonable time is extremely difficult due to the enormous distances involved. Our closest star (after the sun) is Proxima Centauri at over 4 light years away. The Voyager 1 space probe will take over 74,000 years at an average speed of 61,200 kmph (38,000 mph) to reach this distance. So why is this more believable than the moon landings or Mars landings?
2007-01-19
08:30:00
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5 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Astronomy & Space