NASA Makes Plans to Deflect Possible Asteroid Hit in 2036

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NASA has outlined what it could do, and in what time frame, in case a
quarter-mile-wide asteroid named Apophis is on a course to slam into
Earth in the year 2036. The timetable was released by the B612
Foundation, a group that is pressing NASA and other government agencies
to do more to head off threats from near-Earth objects.

The plan runs like this: Eight years from now,
if there’s still a chance of a collision in 2036, NASA would start
drawing up plans to put a probe on the space rock or in orbit around it
in 2019. Measurements sent back from the probe would characterize
Apophis’ course to an accuracy of mere yards (meters) by the year 2020.

If
those readings still could not rule out a strike in 2036, NASA would
try to deflect the asteroid into a non-threatening course in the
2024-2028 time frame by firing an impactor at it — using this year’s Deep Impact comet-blasting probe
as a model. Experts would start planning for the "Son of Deep Impact"
mission even before they knew whether or not it was needed.