Karen Northon
Abstract
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
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NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
Key concepts: Exoplanet, Astrobiology, Planet, Spitzer Space Telescope, Astronomy, Telescope, Kepler-69c, Circumstellar habitable zone