An asteroid may hit Earth in 8 years — but don't panic
The hunk of space rock measures somewhere between 130 and 300 feet long, but its speed is unknown. “It’s a matter of ‘does it hit early or late?’” Beatty said. Based on what astronomers do know, they estimate there is a 1.3% chance that it will hit Earth on Dec. 22, 2032.
Earth received water toward the final stages of its formation. This reshapes understanding of the conditions needed for life.
Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But do other planets in the solar system have them too?
8don MSN
YR4 might force NASA to plan the first-ever space mission to push an asteroid away from Earth. Most likely, though, it's a non-threat.
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