GMAT
Responding to the public's fascination with-and sometimes undue alarm over-possible threats from asteroids, astronomers have developed a scale to rate how likely a particular asteroid or comet will be to collide with Earth.
Responding to the public's fascination with-and sometimes undue alarm over-possible threats from asteroids, astronomers have developed a scale for rating the likelihood that a particular asteroid or comet will collide with Earth.
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