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отражательная способность поверхности (A separate idea called a gravity tractor involves a large spacecraft flying up near the asteroid and -- without touching it -- using its gravitational pull to tug it away from Earth. Another non-contact plan would put a spacecraft near the asteroid armed with thrusters that would exert a "constant stream of ions" to shove the asteroid off course, Moissl said. Scientists have also considered spray painting one side of the asteroid white, increasing its reflectiveness so it slowly changes trajectory. (yahoo.com/news) ART Vancouver) |
