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7 planets orbiting nearby star could hold life

Over 21 days, NASA's Spitzer Space Telescope measured the drop in light as each planet passed in front of the star. Spitzer was able to identify a total of seven rocky worlds, including three in the habitable zone, where liquid water might be found.
NASA Jet Propulsion Laboratory
7 planets orbiting nearby star could hold life 1:57

7 planets orbiting nearby star could hold life

4 things you need to know about the new iPhone 7 0:48

4 things you need to know about the new iPhone 7

Harnessing the firenado 1:16

Harnessing the firenado

Take a ride inside Google's self-driving car 3:16

Take a ride inside Google's self-driving car