NASA Plans to Deflect Asteroids to Defend the Planet from Cosmic Disaster

While the Earth is not in immediate danger, NASA aims to test "planetary defense" by crashing a spacecraft speeding at 15,000 mph (24,000 kph) with an asteroid next year.

In 2135, an asteroid named Bennu, which is 1,650 feet large and was found in 1999, will pass near half the distance between the Earth and the Moon. However, the likelihood of a collision is deemed very low.

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