Astronomers have discovered the first Earth-sized planet outside the solar system that has a rocky composition like that of Earth. Kepler-78b whizzes around its host star every 8.5 hours, making it a blazing inferno and not suitable for life as we know it. The results are published in two papers in the journal Nature.
MAVEN To Answer Questions About How Mars Lost Its Atmosphere
A NASA spacecraft that will examine the upper atmosphere of Mars in unprecedented detail is undergoing final preparations for a scheduled 1328 EST Monday, Nov. 18 launch from Cape Canaveral Air Force Station in Florida.
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