The asteroid, around 100 feet in diameter, is speeding toward our planet at about 22,000 miles per hour, according to NASA.
Today In The Space World on MSN
The cosmic race: How long each planet takes to orbit the sun
Explore the solar system from Mercury to Pluto and discover the extraordinary differences in orbital speed, year length, and rotation. Learn how Mercury completes a year in just 88 days, while Neptune ...
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