At the time of DART's impact, the asteroid pair was 6.8 million miles (11 million kilometers) away from Earth as they traveled on their orbit around the Sun. The DART spacecraft was designed to collide head-on with Dimorphos to alter its orbit, shortening the time it takes the small asteroid to travel around Didymos. When the chunk of asteroid slammed into Earth about 66 million years ago, it released the energy equivalent to 10 billion Hiroshima bombs and left a 110-mile-wide (180 km) crater, Bermúdez said
Australia’s meteorite craters: 32 major impacts; THE LARGEST IMPACT ZONE from a meteorite ever discovered on Earth has been found in central Australia. But the exact ecological impact – thought to be one giant asteroid which broke in two before slamming into the planet over 300 million years ago – remains a mystery.
In 2007 Richard Firestone and other American scientists presented a new hypothesis: that the cause was a cosmic impact like an asteroid or comet. The impact could have injected a lot of dust into
The effects of asteroid impacts linger for billions of years. Here are the 10 biggest impact craters known, from largest to smallest. The oldest impact crater on Earth is also the largest
Medium-sized asteroids hit Earth frequently without major devastation, but there is more to an asteroid impact than meets the eye. Impacts can cause other hazards that can last for years, and a planetary defense preparedness strategy should address not just the initial impact but also these second-order “cascading” hazards.
On Sept. 26, 2022, DART slammed into Dimorphos, a 530-ft. asteroid moonlet almost 7 million mi. from Earth and successfully demonstrated a kinetic-impact strategy for diverting an NEO on a course 600XlIi.
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    • major asteroid impacts on earth