1. Visit science.nasa.gov/ for more.

    Which is brighter--a flurry of Perseid fireballs or a supermoon? Sky watchers will find out this August when the biggest and brightest full Moon of 2014 arrives just in time for the peak of the annual Perseid meteor shower.

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  2. Visit science.nasa.gov/ for more.

    A mysterious X-ray signal from the Perseus cluster of galaxies, which researchers say cannot be explained by known physics, could be a key clue to the nature of Dark Matter.

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  3. Visit science.nasa.gov/ for more.

    The summer of 2014 will be bathed in moonlight as three perigee "supermoons" occur in consecutive months: July, August, September.

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    A new species is about to join astronauts on the International Space Station: Drosophila melanogaster, also known as the "fruit fly." Genetically speaking, the bug-eyed insects have a lot in common with human beings, and they are poised to teach researchers a great deal about voyaging into deep space.

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  5. Visit science.nasa.gov/ for more.

    NASA is about to launch a satellite dedicated to the study of the greenhouse gas carbon dioxide. The Orbiting Carbon Observatory (OCO-2) will quantify global CO2 sources and sinks, and help researchers predict the future of climate change.

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ScienceCasts are short videos about fun, interesting, and unusual science topics encountered by NASA’s science missions.

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