They report that this so-called Baptistina family must have come from the collision of a 37-mile-wide asteroid with one measuring 106 miles wide—the parent of 298 Baptistina—some 160 million years ago.
The explosion would have showered the space around Earth and the moon with asteroids, doubling the overall rate of Earth and lunar impacts for the next 100 million years or so. Among the shower would hurtle dozens of "dinosaur killer" asteroids six miles wider or larger, approximately one of which should have struck Earth, according to results published in Nature.
The explosion would have showered the space around Earth and the moon with asteroids, doubling the overall rate of Earth and lunar impacts for the next 100 million years or so. Among the shower would hurtle dozens of "dinosaur killer" asteroids six miles wider or larger, approximately one of which should have struck Earth, according to results published in Nature.
• Key Players in the Plame Affair
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