MadSci Network: Astronomy |
No. The idea might have some merit if the rocket could, say, be sent around the sun and come back to earth at high velocity. But just launching a rocket to drop sand would mean that the relative velocity difference would not likely be high enough to generate the frictional forces required for the sand to become a "shooting star". Remember that the earth is traveling through local space at terrific velocities. Just its orbit around the sun has it going some 100,000 km/hr (66,000 mph) which means that when a small chunk of stuff - such as a grain of sand - hits the upper atmosphere, it is really moving. In addition, the grain of sand would also have its own velocity resulting in a very high relative velocity. It is the frictional forces as the grain of sand interacts with the gas in the atmosphere and loses velocity that causes it to light up. Anything launched from the earth will already be moving with it and will not be going fast enough. That said, the rocket itself could certainly create a fireball (witness the tragedy of the Columbia as it broke up on re-entry) but the type of shooting star in this instance would not be typical of a meteorite. Hope this answers your question.
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