Most space rocks that pass nearby Earth are solo travelers making their way around the Sun and slipping past our planet as they do so. Asteroid 1999 KW4, which will make a distant pass of Earth on May 25th, is quite a bit different. The large primary body of the object is thought to be around a mile wide, and it’s large enough that a smaller “asteroid moon” now orbits it.
The smaller “moon” of the larger rock is still fairly sizable on its own, measuring over a quarter mile in diameter. If the double asteroid were to pose a threat to Earth, we’d be in for some serious trouble, but thankfully that’s not the case.
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Massive double asteroid will cruise by Earth later this week originally appeared on BGR.com on Wed, 22 May 2019 at 16:20:31 EDT. Please see our terms for use of feeds.
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