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

By modeling ice sheets in Antarctica, scientists have changed the way we think about Earth's transition 34 million years ago from warm 'greenhouse' to the current, cool 'icehouse'. The new study has important implications for how we understand climate change and its affects on the biosphere.

A discovery about the moon made in the 1960s is helping researchers with NASA's Gravity Recovery and Climate Experiment unlock secrets about Earth's ocean today.

Scientists are busy preparing for the "First Light" flight of NASA's Stratospheric Observatory for Infrared Astronomy, or SOFIA, a highly modified Boeing 747SP.

Chandra Studies Mysterious X-Ray Source

If you're wondering why the first launch attempt for space shuttle Discovery was scrubbed early Tuesday morning, here's your answer.

NASA's Dr. Jon Ranson is on an expedition in the forests of central Maine to validate recent radar and lidar measurements which will help create more accurate and sensitive sensors to better understand the vegetation of the Earth and to balance the carbon budget.

Life may have been significantly affected in the past by a cosmic ray blast, but researchers are still looking for the smoking gun.

NASA's Mars Reconnaissance Orbiter put itself into a safe mode Wednesday morning, Aug. 26, for the fourth time this year.

More powerful computers needed to process the sophisticated computer models used in climate forecasts are now being developed at Goddard.