Astronomers thought they saw a big explosion in the nearby Andromeda galaxy. GALEX, JPL-Caltech/ NASA hide caption

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Rumors Of An Intergalactic Explosion Are Greatly Exaggerated

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An artist's rendering of Kepler-186f, the first validated Earth-size planet to orbit in the habitable zone of a distant star. T. Pyle/NASA/SETI Institute/JPL-Caltech hide caption

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Scientists Spot A Planet That Looks Like 'Earth's Cousin'

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This diagram for the outer solar system shows the orbits of Sedna (in orange) and 2012 VP113 (in red). The sun and terrestrial planets are at the center, surrounded by the orbits (in purple) of the four giant planets — Jupiter, Saturn, Uranus and Neptune. The Kuiper belt, which includes Pluto, is shown by the dotted light blue region. Scott S. Sheppard/Carnegie Institution for Science hide caption

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New Dwarf Planet Found At The Solar System's Outer Limits

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Russian personnel are the first to meet space station crew members when they return to earth. Bill Ingalls/NASA hide caption

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Despite Diplomatic Tensions, U.S.-Russia Space Ties Persist

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An artist's concept of a narrow asteroid belt orbiting a star similar to our own sun. NASA/JPL-Caltech hide caption

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Asteroid Belt May Be Just One Big Melting Pot Of Space Rocks

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The Chinese flag is seen in front of a view of the moon at Beijing's Tiananmen Square in December, when China's first moon rover touched the lunar surface. That feat was widely celebrated — but observers believe the rover has now run into serious trouble. Mark Ralston/AFP/Getty Images hide caption

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China's Jade Rabbit Rover May Be Doomed On The Moon

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