Apr 18

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Space Tornadoes, Baby Stars, and Ancient Galaxies

After a thousand days in space, the Infrared Array Camera on the Spitzer Space Telescope has sent back thousands of images of stars being born, space "tornadoes" and galaxies at the edge of the universe. To commemorate its voyage, the…

After years of debate over Pluto's planetary status, the International Astronomical Union voted Thursday to classify the celestial object as a "dwarf planet," thereby shrinking the number of major planets in the solar system to eight.