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Mass Extinctions Linked To Comet, Asteroid Showers

Mass extinctions occurring over the past 260 million years were likely caused by comet and asteroid showers, scientists conclude in a new study. For more than 30 years, scientists have argued about a controversial hypothesis relating to periodic mass extinctions and impact craters, caused by comet and asteroid showers, on Earth. Michael Rampino, a New […]

Asteroids Stick To Ceres Like It’s A Dartboard

The dwarf planet Ceres may be something of a cosmic dartboard: Projectiles that slam into it tend to stick. That’s the conclusion scientists reached after using NASA’s Vertical Gun Range, a cannon with a 14-foot barrel that can launch projectiles at up to 16,000 miles per hour. They fired pebble-sized bits of basalt and aluminum, […]