On the hunt for alien worlds that might support life, NASA's unmanned Cassini spacecraft has survived its closest-ever dive through the icy spray coming from Saturn's moon Enceladus.
Pluto has blue skies and patches of frozen water, according to the latest data out Thursday from NASA's unmanned New Horizons probe, which made a historic flyby of the dwarf planet in July.
Six people shut themselves inside a dome for a year in Hawaii, in the longest US isolation experiment aimed at helping NASA prepare for a pioneering journey to Mars.
There's a near-perfect heart shape on Pluto's rusty red surface which scientists are seeing for the first time as a piano-sized NASA spacecraft, New Horizons, hurtles toward the distant body on its way toward a historic flyby ...
The closest-yet views of Ceres, delivered by NASA's Dawn spacecraft, show the small world's features in unprecedented detail, including Ceres' tall, conical mountain; crater formation features and narrow, braided fractures.
A NASA camera aboard the Deep Space Climate Observatory (DSCOVR) satellite captured a unique view of the moon as it moved in front of the sunlit side of Earth last month. The series of test images shows the fully illuminated ...
Scientists may be closer to solving the mystery of how Mars changed from a world with surface water billions of years ago to the arid Red Planet of today.
It's widely believed that the moon features networks of caves created when violent lava flows tore under the surface from ancient volcanoes. Some craters may actually be "skylights" where cave ceilings have crumbled.
The New Horizons spacecraft did what it was meant to do. It explored the unexplored dwarf planet Pluto. So, now what?
Since its 1977 launch, NASA's Voyager 1 spacecraft has travelled farther than any other piece of human technology. It is also the only human-made object to have entered interstellar space.