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El Gordo

The 10 Weirdest Objects in the Universe

WATCH as a Massive Eruption of Incandescent Plasma Explodes Far Into Space From the Sun

The Many Resurrections of the Hubble Space Telescope

WATCH: The Solar Eruptions That Caused Today's Spectacular St. Patrick's Day Auroras

Monster Flare Explodes From the Sun With Energy of Millions of H-Bombs

Brent Tully

Researchers Come Closer Than Ever to Defining Our Place in Space

Take a Breathtaking Journey to the Sun, Skim its Surface — and Be Amazed!

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Oops! 8 Discoveries Astronomers Didn't Mean to Make

Astronomers Spot a Supernova in the Making

Satellite Spies Gargantuan Sunspots that Could Launch Solar Explosions Toward Earth

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Mistaken Identity Explains How G2 Survived a Black Hole

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What It Will Take to Become an Interstellar Civilization

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