1. Visit science.nasa.gov/ for breaking science news.

    Life as we know it doesn't thrive on planets without ozone layers. A new instrument slated for launch to the ISS will monitor Earth's protective ozone shell with greater depth and precision than ever before.

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  2. Visit science.nasa.gov/ for breaking science news.

    A comet is heading for Mars, and there is a chance that it might hit the Red Planet in October 2014. An impact wouldn't necessarily mean the end of NASA's Mars program. But it would transform the program along with Mars itself.

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  3. Visit science.nasa.gov/ for breaking science news.

    Comet Pan-STARRS has survived its encounter with the sun and is now emerging from twilight in the sunset skies of the northern hemisphere. A NASA spacecraft monitoring the comet has beamed back pictures of a wild and ragged tail.

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  4. Visit science.nasa.gov/ for breaking science news.

    Forecasters say solar maximum is due in 2013. To prepare, the UN is organizing an international response to stormy space weather.

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  5. Visit science.nasa.gov/ for breaking science news.

    Something unexpected is happening on the sun. 2013 is supposed to be the year of Solar Max, but solar activity is much lower than expected. At least one leading forecaster expects the sun to rebound with a double-peaked maximum later this year.

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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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