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Ask Astro

Ask Astro answers reader questions about the science and hobby of astronomy in every issue of the magazine. Search our archive of questions or submit your own question for consideration in the magazine.

As the Sun shines on Pluto's dayside, it turns ice to vapor.

Astronomers once thought Pluto's atmosphere would condense down to the surface as it moved away from the Sun. Can that still be true, and if so, is that causing the surface features we now see?See answer ТЛ

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Searching for Far Out and Wandering Worlds

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An artificial comet holds secrets to Earths life

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Young super-Jupiter found wandering without a parent

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Searching for aliens who already know we're here

A gamma-ray burst hints that LIGO's double black holes started as one massive star

Pluto's largest moon may have once had an ocean

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