This is why monitoring even seemingly small aspects in space is so important ⬇️
In the next 10 million years, large rock pieces combined to create an asteroid about 60 miles wide, Kring said. This parent body sustained a large impact with another space object about 125 million years after the solar system was formed, with more strikes coming during the"late heavy bombardment" period — a time of frequent small-body strikes that occurred between 3.8 billion and 4.3 billion years ago. Two other impacts have come in the last 500 million years.
, which flew within 50,000 miles of our planet on Aug. 28, 2016. For perspective, the moon orbits Earth at an average distance of 239,000 miles . The asteroid was only discovered shortly before its flyby. NASA has been searching for potentially hazardous objects for decades; the threshold for detection, however, is pegged at a size that's much larger than the Chelyabinsk bolide. For example, in 2005, Congress asked NASA to find 90 percent of near-Earth objects that are more than 450 feet in diameter.
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