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Science@NASA Feature Stories Podcasts

The mission of Science@NASA is to help the public understand how exciting NASA research is and to help NASA scientists fulfill their outreach responsibilities.

  • Geminid Meteors Defy ExplanationGeminid Meteors Defy Explanation

    The annual Geminid meteor shower peaks this year on Dec. 13th and 14th. Researchers don't fully understand the Geminids, and new measurements make it more mysterious than ever.

  • "Arsenic-Bug" Redefines Life as We Know It"Arsenic-Bug" Redefines Life as We Know It

    NASA-supported researchers have discovered the first known microorganism on Earth able to thrive and reproduce using the toxic chemical arsenic. The microorganism, which lives in California's Mono Lake, substitutes arsenic for phosphorus in the backbone of its DNA.

  • Alien Comets Invade the Solar SystemAlien Comets Invade the Solar System

    Some of the comets in our Solar System probably came from other stars, according to new research by NASA-supported scientists. Studying these 'alien' comets, they say, could reveal new information about stellar systems far, far away.