prasad1
Active member
[video]http://r.search.yahoo.com/_ylt=A2KLqILL4K5TRD4Ar6f7w8QF;_ylu=X3oDMTB2NnEzdDc 5BHNlYwNjZC10aHVtYgRzbGsDc25vYgR2dGlkA1YxNTc-/RV=2/RE=1403998539/RO=10/RU=http%3a%2f%2fvideo.nationalgeographic.com%2fvid eo%2fnews%2f092311-space-junk-ngtoday/RK=0/RS=_LVlYnrTHYJ9XN263mjCklXnvqc-[/video]
Fiery chunks of a European satellite fell from the sky, the latest in a parade of what scientists worryingly call “uncontrolled entries.” And new research showed that asteroids like the one that exploded over Russia in February will probably hit Earth more often than previously expected.
Many space objects experience a carefully controlled demise. Russia's Mir space station, for example, was steered into a remote patch of ocean in 2001.But other pieces—old rocket segments jettisoned in orbit and abandoned spacecraft—fall toward Earth unguided. Last year one object a day, on average, made an unshepherded dive into the atmosphere, said NASA's Nick Johnson.
To date nearly 6,000 tons of human-made material have survived the fiery journey through our atmosphere, according to the Aerospace Corporation, a space-research center.
Fiery chunks of a European satellite fell from the sky, the latest in a parade of what scientists worryingly call “uncontrolled entries.” And new research showed that asteroids like the one that exploded over Russia in February will probably hit Earth more often than previously expected.
Many space objects experience a carefully controlled demise. Russia's Mir space station, for example, was steered into a remote patch of ocean in 2001.But other pieces—old rocket segments jettisoned in orbit and abandoned spacecraft—fall toward Earth unguided. Last year one object a day, on average, made an unshepherded dive into the atmosphere, said NASA's Nick Johnson.
To date nearly 6,000 tons of human-made material have survived the fiery journey through our atmosphere, according to the Aerospace Corporation, a space-research center.
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