News from NEAT

Very rarely—perhaps once in several hundred thousand years—a large meteoroid strikes the earth, causing great damage, as discussed in "Impact? The Earth-Crossing Asteroids," earlier in the chapter.

Cumulative NEAT Asteroid arid Comet Detections

&AI3 Asteroids and Cornels * NEMJnusual Discovered ■ NEfis Detected

S leoDO

Jan-tIO Apr-00

Counts of near-earth asteroids from Project NEAT (Near Earth Asteroid Tracking).

(Table from NASA/NEAT)

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