Two Asteroids, One Dinosaur Extinction: Second Crater Bolsters Double Impact Theory

Sharp, three-dimensional seismic data of a seafloor crater off Guinea seems to confirm that a second asteroid hit Earth at approximately the same time as the behemoth that hit North America 66 millio… [+3928 chars]

Two Asteroids, One Dinosaur Extinction: Second Crater Bolsters Double Impact Theory

Two Asteroids, One Dinosaur Extinction: Second Crater Bolsters Double Impact Theory

Two Asteroids, One Dinosaur Extinction: Second Crater Bolsters Double Impact Theory

Two Asteroids, One Dinosaur Extinction: Second Crater Bolsters Double Impact Theory
Two Asteroids, One Dinosaur Extinction: Second Crater Bolsters Double Impact Theory
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