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Atom & Cosmos

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a backwards asteroid orbit

IN REVERSE  Jupiter’s trip around the sun is accompanied by many asteroids (white), which travel in the same direction as the planet. But scientists have found one, Asteroid 2015 BZ509 (green), that orbits backward.

quasar 3C 186

ON ITS WAY OUT  A radiation-gushing supermassive black hole, quasar 3C 186 (second brightest blob in the blue oval), appears to be zooming away from its galaxy’s center (brightest blob in blue oval). The extreme exit may be a result of gravitational waves from merging black holes.


PLANET OR NOT?  A group of planetary scientists label Pluto and many other orbs in the solar system as planets, despite the definition set down by the International Astronomical Union in 2006.

Atom & Cosmos

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