Get the latest news in earth science, heliophysics, astrophysics and planetary science from NASA's Science Mission Directorate.

Using gravity measurement data from the NASA/German Aerospace Center's Gravity Recovery and Climate Experiment (Grace) mission, a team of scientists from the University of Texas at Austin has found that the East Antarctic ice sheet-home to about 90 percent of Earth's solid fresh water and previously considered stable-may have begun to lose ice.

The team operating NASA's Mars Reconnaissance Orbiter plans to uplink protective files to the spacecraft next week as one step toward resuming the orbiter's research and relay activities.

Scientists have revealed new information about a period of time spanning three of Earth's largest mass extinctions. The study shows how different marine environments - from oceans to seas that once covered large portions of the continents - respond differently to agents of mass extinction.

In the first video showing the auroras above the northern latitudes of Saturn, Cassini has spotted the tallest known 'northern lights' in the solar system, flickering in shape and brightness high above the ringed planet.

NASA mission managers are assessing options for future operations of the venerable QuikScat satellite following the age-related failure of a mechanism that spins the scatterometer antenna.

Much of Earth's mineral wealth was deposited billions of years ago when chemical cycles on our planet were very different than today's. Recently, scientists used geochemical data from minerals to yield surprising information about conditions on the ancient Earth.

A star's death was observed on Earth as the supernova of 1054 A.D. Almost a thousand years later, a neutron star left behind by the explosion spews out high-energy particles into the expanding debris field known as the Crab Nebula.

NASA's Spitzer Space Telescope has contributed to the discovery of the youngest brown dwarf ever observed -- a finding that, if confirmed, may solve an astronomical mystery about how these cosmic misfits are formed.

Mini-RF S-band zoom radar image strip through central Mare Serenitatis on the near side of the Moon.