Mysterious asteroid the size of a dwarf planet is lurking in our solar system – Livescience.com

There’s a giant asteroid somewhere out in the solar system
, and it hurled a big rock at Earth
.
The evidence for this mystery space rock comes from a diamond-studded meteor that exploded over Sudan in 2008.
NASA had spotted the 9-ton (8,200 kilograms), 13-foot (4 meters) meteor
heading toward the planet well before impact, and researchers showed up in the Sudanese desert to collect an unusually rich haul of remains. Now, a new study of one of those meteorites suggests that the meteor may have…

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