"In addition to the surveys that use ground- and space-based optical telescopes to detect and track nearly 27,000 NEOs throughout our solar system, planetary radar is an important tool for monitoring asteroids that come close to Earth," said Kelly Fast, NEO Observations Program Manager of the Planetary Defense Coordination Office at NASA Headquarters in Washington. "Reaching this milestone of now just over 1,000 radar detections of NEAs emphasizes the important contribution that has been made in characterizing this hazardous population, which is fundamental for our planetary defense efforts."
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At phys.org
At phys.org
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