Scientists are fascinated by a dark, lake-like feature recently observed on Saturn's moon Titan.
NASA-funded researchers at the Massachusetts Institute of Technology, Cambridge, Mass., have created a new form of superfluid matter.
As the mercury shoots upward and lazy summer days stretch into balmy evenings, NASA is teaming with amateur astronomy clubs across the country.
An enormous light echo etched in the sky by a fitful dead star was spotted by the infrared eyes of NASA's Spitzer Space Telescope.
After a voyage of 173 days and 431 million kilometers (268 million miles), NASA's Deep Impact spacecraft will get up-close and personal with comet Tempel 1 on July 4 (EDT).
A recent flyby of Saturn's hazy moon Titan by the Cassini spacecraft has revealed evidence of a possible volcano, which could be a source of methane in Titan's atmosphere.
Engineers and mission managers for NASA's Mars Exploration Rover mission cheered when images from the Martian surface confirmed Opportunity had successfully escaped from a sand trap.
NASA has given the green light to a project to put a long-armed lander onto the icy ground of the far-northern martian plains.
Despite near-record levels of chemical ozone destruction in the Arctic this winter, observations from NASA's Aura spacecraft showed that other atmospheric processes restored ozone amounts to near average and stopped high levels of harmful ultraviolet radiation from reaching Earth's surface.
Two of NASA's eyes in the sky, the Spitzer and Hubble Space Telescopes, helped scientists prepare for the comet Tempel 1 encounter.
NASA today announced that a mission to fly to Jupiter will proceed to a preliminary design phase.
Scientists studying data from NASA's Galileo spacecraft have found that Jupiter's moon Amalthea is a pile of icy rubble less dense than water.
It was a day like any other for a nearby star named GJ 3685A – until it suddenly exploded with light.
The saga of how a few monstrous stars spawned a diverse community of additional stars is told in a new image from NASA's Spitzer Space Telescope.
Saturn's moon Titan shows an unusual bright spot that has scientists mystified.
NASA's Mars rover Opportunity is trying to escape from a sand trap, while its twin, Spirit, has been busy finding new clues to a wet and violent early Martian history.
NASA's Voyager 1 spacecraft has entered the solar system's final frontier.
The Cassini spacecraft has obtained the most detailed look ever at Saturn's rings, including the B ring, which has eluded previous robotic explorers.
A NASA satellite that measures the variability in the amount of the Sun's energy that reaches Earth's atmosphere and impacts our winds, land and oceans has successfully accomplished its five-year primary mission.
Photographs from NASA's Mars Global Surveyor spacecraft released today are the first pictures of any spacecraft orbiting Mars ever taken by another spacecraft orbiting Mars.