Asteroid that formed moon's Imbrium Basin may have been protoplanet-sized

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The asteroid that slammed into the moon 3.8 billion years ago creating the Imbrium Basin may have had a diameter of at least 150 miles, according to a new estimate. The work helps explain puzzling geological features on the moon's near side, and has implications for understanding the evolution of the early solar system.
via Science Daily
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First atmospheric study of Earth-sized exoplanets points to possible habitability

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Using NASA's Hubble Space Telescope, astronomers have conducted the first search for atmospheres around temperate, Earth-sized planets beyond our solar system and found indications that increase the chances of habitability on two exoplanets.
via Science Daily
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NASA's Hubble Telescope Makes First Atmospheric Study of Earth-Sized Exoplanets

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The possibility of life on other worlds has fueled humankind's imagination for centuries. Over the past 20 years, the explosion of discoveries of planets orbiting other stars has sparked the search for worlds like Earth that could sustain life. Most of those candidates were found with other telescopes, including NASA's Kepler space observatory. NASA's Hubble Space Telescope has also made some unique contributions to the planet hunt. Astronomers used Hubble, for example, to make the first measurements of the atmospheric composition of extrasolar planets.

via HubbleSite NewsCenter -- Latest News Releases
http://hubblesite.org/newscenter/archive/releases/2016/27/

Dark Dunes on Mars (Horizontally Compressed)

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