News

  1. Astronomy

    Hubble Highlights a Riddle: What’s the source of quick-return comets?

    New observations from the Hubble Space Telescope demonstrate that scientists don't know where a major class of comets comes from.

    By Ron Cowen
  2. Planetary Science

    Cozying up to Mars

    The Hubble Space Telescope photographed Mars on Aug. 27 when the planet came closer to Earth than it had in nearly 60,000 years, enabling the telescope to take the sharpest global image of Mars ever taken from Earth's vicinity.

    By Ron Cowen
  3. Archaeology

    Art on the Rocks: Dating ancient paintings in the caves of Borneo

    By dating the mineral deposits on top of cave paintings in Borneo, archaeologists have pushed back the date of earliest human habitation on the island by at least 5,000 years.