How to Build a Planet
JPL Spitzer Space Telescope astronomer explains a colorful animation of two planets colliding and spewing lava and vaporized rock. credit: NASARelated Videos
- Spitzer Finds Cauldron of Light
- Zooming in on Second-Brightest Star in Milky Way
- Pan Across Star-Forming Region NGC 3324 in the Carina Nebula
- Spitzer's New 'Warmer' Mission
- Atmospheres of Faraway World
- Spitzer's Spin on Stars
- Spitzer Warm MIssion
- Spitzer Warm MIssion
- Taking in the Atmospheres of Faraway Worlds
- Spitzer's Spin on Stars
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Which radioactive element keeps the Earth's core hot?
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