According to scientists who maintain that dinosaur extinction came quickly ... blasted into Earth by a 10-kilometer-wide asteroid or comet traveling 30 kilometers per second -- 150 times faster ...

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Most of the Fossil Fun Games are beyond view, but the Comet Crasher game is now clearly gone. It previously sat next to the Cementosaurus, a giant dinosaur sculpture at the back entrance of ...

At the start of the period, dinosaurs ruled the loosening remnants ... Whether or not the asteroid or comet that carved the Chicxulub crater caused the extinction of more than half the planet's ...

The extinction of the dinosaurs was first linked to a comet or asteroid impact in 1980 by the late Berkeley Nobel Laureate Luis Alvarez and his son, Walter, who is a UC Berkeley professor emeritus of ...

Something—a bout of violent volcanic eruptions, climate change, or perhaps a fatal run-in with a comet or asteroid ... rodent-size mammals and the first dinosaurs. By the start of the Triassic ...

Did dinosaurs lose their dominance suddenly or ... Although geologists generally acknowledge that a comet or asteroid impact would cause these fractures, some scientists conclude that they could ...