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17 billion?: Earth-size planets
Incredibly, two teams of U.S. astronomers estimated last week that the Milky Way galaxy probably contains at least 100 billion planets, and perhaps 17 billion of them are Earth-size. This mind-blowing news was announced at the winter assembly of the American Astronomical Society in California.
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17 billion?: Earth-size planets
Incredibly, two teams of U.S. astronomers estimated last week that the Milky Way galaxy probably contains at least 100 billion planets, and perhaps 17 billion of them are Earth-size. This mind-blowing news was announced at the winter assembly of the American Astronomical Society in California.
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