Bid Adieu to Summer 2015

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This is the last week of summer. Autumn arrives next Wednesday.

NASA’s New Horizons is en route to a 35 mile-wide iceball one billion miles beyond Pluto. ETA; Jan. 1, 2019.

Chinese astronomers have identified the galaxy Markarian 231. At 581 million light years away, it is our nearest quasar but it has a twist – powered by not one, but two orbiting black holes!

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