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  • Draconid Meteor Outburst

    Draconid Meteor Outburst

    Oct. 4, 2011

    Science@NASA Headline News — 2011

    Forecasters say Earth is heading for a stream of dust from Comet 21P/Giacobini-Zinner. A close encounter with the comet's fragile debris could spark a meteor outburst over parts of our planet on October 8th.

  • Mars Atmosphere is Supersaturated with Water

    Mars Atmosphere is Supersaturated with Water

    Oct. 3, 2011

    News & Features

    A new analysis of data from ESA's Mars Express spacecraft has revealed that the atmosphere of Mars is supersaturated with water vapor. The findings could help astrobiologists determine if Mars once supported habitable environments for life.

  • Dawn Spacecraft Begins New Vesta Mapping Orbit

    Dawn Spacecraft Begins New Vesta Mapping Orbit

    Oct. 3, 2011

    News & Features

    NASA's Dawn spacecraft has completed a gentle spiral into its new science orbit for an even closer view of the giant asteroid Vesta. Dawn began sending science data on Sept. 29 from this new orbit, known as the high altitude mapping orbit (HAMO).

  • The Strange Attraction of Gale Crater

    The Strange Attraction of Gale Crater

    Sept. 30, 2011

    Science@NASA Headline News — 2011

    NASA's newest rover "Curiosity" is getting ready to leave Earth. Its destination: Gale crater on Mars. Today's story from Science@NASA explains the attraction of this Martian crater with a strangely-sculpted mountain the middle.

  • Heavy Metal Stars Produce Earth-Like Planets

    Heavy Metal Stars Produce Earth-Like Planets

    Sept. 29, 2011

    News & Features

    Examining the wealth of data from Kepler, astronomers have seen a positive correlation between stellar composition and planetary formation, a correlation that could affect how we search for life in the universe.

  • Doubts Over Fomalhaut b

    Doubts Over Fomalhaut b

    Sept. 28, 2011

    News & Features

    Formalhaut b has been billed as the first exoplanet to be directly imaged in optical wavelengths. Now, it's identity is being questioned. Determining the effectiveness of planet-hunting techniques is important for astrobiologists who are searching for habitable worlds around distant stars.

  • Help NASA Find Life On Mars With MAPPER

    Help NASA Find Life On Mars With MAPPER

    Sept. 27, 2011

    News & Features

    Would you like to participate in NASA's analog research program? Interested in helping scientists pinpoint where to look for signs of life on Mars and elsewhere in the universe? Now you can, with an exciting new citizen science website called MAPPER.

  • Earth's Trapped Gas Fed the Early Atmosphere

    Earth's Trapped Gas Fed the Early Atmosphere

    Sept. 27, 2011

    News & Features

    A new study demonstrates how salty water and gases transfer from the atmosphere into the Earth's interior. The research provides new insight into the evolution of our planet. Studying the physical processes of Earth can help astrobiologists understand what makes a planet habitable.

  • Exploring an Asteroid with the Desert RATS

    Exploring an Asteroid with the Desert RATS

    Sept. 26, 2011

    News & Features

    Scientists and astronauts recently simulated a future human mission to an asteroid in the desert near Flagstaff, Arizona.

  • How Enceladus Shapes Saturn

    How Enceladus Shapes Saturn

    Sept. 23, 2011

    News & Features

    Combining data from the Herschel Space Observatory with cloud models of Saturn has helped scientists understand how plumes of water vapor and ice from Enceladus affect the chemical composition of Saturn.