Climate cycles persisting for millions of years on ancient Mars left a record of rhythmic patterns in thick stacks of sedimentary rock layers.
Climate cycles persisting for millions of years on ancient Mars left a record of rhythmic patterns in thick stacks of sedimentary rock layers.
NASA's Mars Science Laboratory will launch two years later than previously planned, in the fall of 2011.
Chandra snaps one of the longest exposures ever obtained of a spiral galaxy -- in X-rays.
After nearly a month of daily checks to determine whether Martian NASA's Phoenix Mars Lander would be able to communicate again, the agency has stopped using its Mars orbiters to hail the lander and listen for its beep.
Scientists continue to search for the cause of the geysers on Saturn's moon Enceladus.
NASA is officially moving forward on a mission to conduct an unprecedented, in-depth study of Jupiter.
NASA's Dawn spacecraft shut down its ion propulsion system today as scheduled.
NASA's Mars Reconnaissance Orbiter has revealed vast Martian glaciers of water ice under protective blankets of rocky debris at much lower latitudes than any ice previously identified on the Red Planet.
11.24.08 - NASA is officially moving forward on a mission to conduct an unprecedented, in-depth study of Jupiter.
11.19.08 - Scientists announced Wednesday the discovery of a previously unidentified nearby source of high-energy cosmic rays.
11.13.08 - NASA's Hubble Space Telescope has taken the first visible-light snapshot of a planet circling another star.
11.07.08 - NASA will hold a Science Update to report on a significant discovery about planets orbiting other stars at 2:30 p.m. EST, Thursday, Nov. 13.
Audio and Video podcasts on NASA missions exploring our solar system.
NASA's monthly guide to watching the night sky.
12.04.08 - Administrator Griffin and other NASA officials brief reporters on the delay of the Mars Science Laboratory mission from 2009 to 2011.
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