Huge Crater Found in Egypt
Landsat image (color composite) of the newfound Kebira Crater in the Western Desert of Egypt at the border with Libya. The outer rim of the crater is about 19 miles (31 km) in diameter. Image courtesy of Boston University Center for Remote Sensing
Huge Asteroid Striking Earth
Artist’s impression of a 6-mile-wide asteroid striking the Earth. Scientists think approximately 70 of these dinosaur killer-sized or larger asteroids hit Earth between 3.8 and 1.8 billion years ago.
New Dino-destroying Theory Fuels Hot Debate
An artist rendering of a space rock streaking toward Earth. Most experts think an impact off the Yucatan Peninsula 65 million years ago was the primary cause of the dinosaur demise. Others think volcanism and climate change may have played a role. A new and controversial idea suggests there was another, larger impact in India that was responsible.
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