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Rocky? Habitable? Sizing up a galaxy of planets

The planets so far discovered across the Milky Way are a motley, teeming multitude: hot Jupiters, gas giants, small, rocky worlds and mysterious planets larger than Earth and smaller than Neptune. As we prepare to add many ...

dateOct 29, 2018 in Astronomy
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What in the world is an exoplanet?

Step outside on a clear night, and you can be sure of something our ancestors could only imagine: Every star you see likely plays host to at least one planet.

dateApr 17, 2018 in Astronomy
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Image: Testing InSight

Testing continued on NASA's Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, or InSight, spacecraft on inside the Astrotech processing facility at Vandenberg Air Force Base in early March 2018.

dateMar 30, 2018 in Space Exploration
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