• 1:23pm May 10, 2013
    Science Science

    Exploring An Ever-Expanding Universe

    Saul Perlmutter shared the 2011 Nobel Prize in physics for his discovery that the universe was expanding at an accelerating rate. Perlmutter explains how supernovae and other astronomical artifacts are used to measure the expansion rate, and explains what physicists are learning about "dark energy" — the mysterious entity thought to be driving the acceleration.
  • 3:27pm May 06, 2013

    Virgin Galactic Reaches Milestone In Space Tourism Industry

    Virgin Galactic, Richard Branson's space tourism venture, cleared a big hurdle Monday with its first powered test flight. Virgin Galactic plans to start taking "space tourists" for rides early next year. A ticket is expected to cost $200,000.
  • 10:21am Apr 26, 2013
    Science Science

    Studying Earth To Learn About Mars

    Southern Utah's landscape looks a lot like images from the Mars rovers. Marjorie Chan explains how Utah geology might help explain data sent back from Mars missions. Charles Killian describes how people are simulating what it might be like to one day live and work on Mars.
  • The small squares superimposed on this image of the Milky Way galaxy show where in the sky the Kepler telescope is hunting for Earth-like planets. Kepler, which launched in 2009, has identified more than 100 planets.
    10:26pm Apr 18, 2013
    World News World News Science

    Kepler Telescope Spots 3 New Planets In The 'Goldilocks Zone'

    The planets orbiting far-off stars are close to Earth-sized and are a distance from their suns that makes their surfaces neither too hot nor too cold. Since launching in 2009, the Kepler telescope has identified more than 100 planets.
  • Several fragments of this unusual rock were discovered last year in Morocco. It's been hailed as the first meteorite from the planet Mercury, but where it came from in the solar system isn't certain.
    Stefan Ralew
    8:18am Apr 12, 2013
    Science Science

    Origin Of 'Mercury' Meteorite Still Puzzles Scientists

    The rock found in Morocco was even weirder than it looked. The olive green chunk, speckled with white and brown, has chemical and physical properties similar to the planet Mercury. But some experts doubt that the 4.56-billion-year-old meteorite is from the planet closest to our sun.
  • Astronauts work to install the alpha magnetic spectrometer on the International Space Station on May 26, 2011.
    8:50pm Apr 03, 2013
    Science Science

    Sensor On Space Station May Have Seen Hints Of Elusive Dark Matter

    The finding could be a milestone in the decades-long search for the universe's missing material. But some scientists urge caution, saying it's possible the particles seen by the sensor on the International Space Station could have come from somewhere else.
  • 9:21am Mar 30, 2013
    Science Science

    How Cosmic Collisions Have Shaped Our Solar System

    From the rocky fragments in Saturn's rings to Earth's own moon, our solar system bears signs of an ancient demolition derby. Planetary scientist Erik Asphaug describes the role of impacts in our planetary neighborhood, and looks ahead to a possible comet collision on Mars.
  • 9:11am Mar 30, 2013
    Science Science

    Studying Rocks Found On Earth For Clues About Space

    With samples from over 1,800 separate meteorite falls around the world, ASU's Center for Meteorite Studies claims the world's largest university-based meteorite collection. Meenakshi Wadhwa explains how meteorites can teach researchers about the history of the solar system.
  • 1:03pm Mar 15, 2013
    Science Science

    Curiosity Hits Paydirt: New Clues To Life On Mars

    Microbes may once have happily existed on the surface of Mars, according to chemical analysis of a sedimentary rock in the Red Planet's Gale crater. NASA geologist and exobiologist David Blake discusses evidence for an ancient freshwater lake in the crater, and describes the mineral-chomping microbes that may have thrived there.