Scientists have discovered three Earth-sized planets that circle a small star 1/8th the size of our sun, 40 light-years away. The planets in this unique solar system do not rotate on their individual axes, leaving one side of each planet burning up in the sun and the other freezing cold in the darkness. The area in the middle is believed to be temperate enough to harbor life. Scientists plan to investigate the makeup of these planets with the Hubble Space Telescope.
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Image credit: ESO/M. Kornmesser/Nature