Space junk, grow with each passing day scientists proposed "weird" garbage
Since the first space junk has more than 50 years, space junk, grow with each passing day. To this end, researchers have proposed some methods of creative, to clean up the space junk.
March 25th hearing, according to Science Daily website reported, since 1957, before 4 October, the Soviet Union launched the first artificial earth satellite, opened a prelude to the era of human space, but also for the space to send the first batch of man-made rubbish. Since then, with the history of human space a space junk feat, grow with each passing day. To this end, researchers have proposed some methods of creative, to clean up the space junk.
At present, a clear space junk wildly creative plan lets American Johnson Space Center of NASA's orbital debris Program Office of the program manager and chief scientist Nicholas Johnson satisfactory is — — emission of a diameter of 1.6 kilometers of the great Non Stretch leisure foam (Non-Expanding Recreational Foam, NERF) ball, the a huge bubble ball can be used to collect the space junk. When the small space debris through the foam ball, lose energy rapidly falling to the earth's surface. However, this scheme also has shortcomings, foam ball itself quickly from the track, because its size in terms of relative weight of partial light, so maybe it will occasionally hit into the running of spacecraft, which is a very bad thing.
In addition, the scientists also designed three kinds of more creative solutions include:
1, the laser transmitter
From the ground or space launch laser, the space junk pushed closer to the earth's orbit, which accelerate whereabouts in the earth's gravitational interaction. But such ideas is that: the cost is too high, the laser emission device is very expensive, but also can hit the target co..
2, space trash collection vehicle
Space garbage truck to designated locations will be in orbit, large pieces of space debris collection and package, and then transported to the relatively close to earth orbit. The old rocket residues that refuse collection vehicles can also collect block. But the scheme's problem is that the cost is too high, and the operation is relatively complex.