News Exclusive

    • How Jupiter Got Big
      How did the largest planet in our solar system form? New theories on how planets like Jupiter form put traditional theories to the test.
      more...
    • Unpuzzling Proteins
      Thanks to a new supercomputer, scientists may be a step closer to understanding one of nature's more difficult puzzles.
      more...
    • Reflections From a Warm Little Pond
      Scientists theorize possible scenarios on how life could have first originated on Earth.
      more...
    • Roses for the Red Planet
      Scientists discuss the importance and the possible risks of seeding the Red Planet.
      more...
    • Focus on Europa
      Scientists from a variety of disciplines met recently to consider the possibility of life on Europa, and to plan how to look for it.
      more...
    • Life’s Chemical Fingerprints
      Using a technique called Raman spectroscopy, researchers are developing instruments that may one day search for life on Mars, Europa, or Callisto.
      more...
    • Return to the Red Planet
      On Saturday, April 7, NASA's next mission to Mars is set to launch. The 2001 Mars Odyssey will investigate the history of water on the Red Planet.
      more...
    • Taking the Temperature of a Martian Meteorite
      A chunk of Mars that was hurled to Earth remained cool enough to preserve any microorganisms aboard. So says a group of researchers who have examined martian meteorite ALH84001.
      more...
    • Can Liquid Water Exist on Present-day Mars?
      Scientific consensus holds that liquid water cannot exist on the surface of Mars. But now a pair of scientists argue that liquid water in limited amounts and for limited times may indeed be present on Mars' surface.
      more...
    • Evo Devo Learns a Larval Lesson
      Scientists have studied the life history of animals, part of a field called development, for many decades. Other scientists have studied how life arose and evolved on Earth.
      more...
    • Through Thick or Thin: Exploring Europa’s Outer Layer of Ice
      When NASA's Galileo spacecraft sent back images and data of the Jovian moon Europa, scientists began thinking seriously that life just might exist on this enigmatic, frozen world.
      more...
    • TNA World
      DNA is the building block for life on Earth. But it is a highly complex molecule, and could not have arranged itself spontaneously. What did it develop from? Astrobiologists examine possible ancestors of DNA: nucleic acids called PNA, p-RNA, and TNA.
      more...
    • Some Like it Hot
      NASA astrobiologist Jack Farmer studies microorganisms.
      more...
    • A Shortage of Planets
      When they turned the Hubble Space Telescope on a distant globular cluster of stars, astronomers expected to find fifteen or twenty planets. They found zero.
      more...
    • Two Rovers in Search of a Landing Site
      In the spring of 2003, NASA will send two rovers to Mars to search for signs of water in the planet's ancient past. But where exactly on Mars should they look for it?
      more...