The orbits of the over 1,000 known potentially hazardous asteroids (PHAs). These are over 140 meters across & will pass within 7.5 million km of Earth. Credit:NASA,JPL-Caltech via /r/spaceporn http://bit.ly/2GfhiXw
via Tumblr http://bit.ly/2DdHv4C
The orbits of the over 1,000 known potentially hazardous asteroids (PHAs). These are over 140 meters across & will pass within 7.5 million km of Earth. Credit:NASA,JPL-Caltech via /r/spaceporn http://bit.ly/2GfhiXw
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