A composite of Lyrids over Huntsville, Ala., in 2009. This year, the meteor shower will hit its peak before dawn Sunday morning. Danielle Moser/MSFC/NASA hide caption

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This image of a huge and powerful solar flare was captured by NASA's Solar Dynamics Observatory Tuesday. NASA hide caption

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Astronauts may have a particular affinity for Tabasco sauce in space because their sense of smell and taste is distorted. John Rose/NPR hide caption

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"El Gordo" — the "big" or "fat" one in Spanish — as seen in a composite image produced by NASA's Chandra X-ray Observatory. NASA/CXC/Rutgers/J.Hughes hide caption

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An artist's conception shows Voyager 1 encountering a stagnation region. To the left is interstellar space. NASA/JPL-Caltech hide caption

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A NASA illustration comparing the newly discovered planets to Venus and Earth. Kepler-20e is slightly smaller than both Venus and Earth. Kepler-20f is slightly larger. NASA/Ames/JPL-Caltech hide caption

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Artist's concept of NASA's Voyager spacecraft. For 35 years, the probes have been beaming images and information back to Earth via a 23-watt transmitter. NASA/JPL-Caltech hide caption

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SETI says that its Allen Telescope Array will be back online in September, thanks to funding secured from online donations. The array is seen here, adjacent to a cow pasture in Hat Creek, Calif. Ben Margot/AP hide caption

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