The new national space policy calls on the space agency to target missions beyond low-Earth orbit – such as to an asteroid – by 2025, with the eventual goal of sending astronauts to Mars.
Water on Mars flowed as recently as several hundred million years ago, much later than had been previously believed, researchers say.
Water on Mars first discovered ten years ago, might still flow on the surface of the red planet.
Mars cave: as part of a research project to study images taken by a NASA spacecraft orbiting the red planet, a group of seventh graders has discovered a mysterious cave on Mars.
Ceres and Pluto will come into opposition with the sun, offering a rare view of these two dwarf planets.
New International Space Station crew departed from a Russian Soyuz rocket on Tuesday. Two Americans and one Russian cosmonaut are onboard.
From a list of 60, there are now four potential exploration sites for a future Mars probe, scheduled to launch next year.
Water, water everywhere. Scientists say Mars had an ocean that covered one-third of its surface.
This artist's concept shows a celestial body about the size of our moon slamming at great speed into a body the size of Mercury. NASA's Spitzer Space Telescope found evidence that a high-speed collision of this sort occurred a few thousand years ago around a young star, called HD 172555, still in the early stages of planet formation. The star is about 100 light-years from Earth.
Researchers determined that the lunar water likely originated early in the moon's formation history, suggesting that it is, in fact, native to the moon.