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Science Mission Directorate
NASA uses orbiting observers and robotic landers to investigate the planets, moons, comets, and asteroids of our Solar System.
Latest Features
NASA's Juno Spacecraft Refines its Path to Jupiter
NASA's solar-powered Juno spacecraft successfully refined its flight path Wednesday with the mission's first trajectory correction maneuver.
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THEMIS Sees a Great Electron Escape
Filled with electrons and charged particles, the radiation belts regularly swell and shrink, but no one is quite sure how. A new study sheds light on how those radiation particles escape.
Space Weather Center Adding 'Ensemble Forecasting' Capability
The sun is beginning to stir. By the time it's fully awake in about 20 months, the Goddard team charged with tracking its moods will have deployed a greatly enhanced forecasting capability.
X1.8 Solar Flare and CME - 01.27.12
Sunspot 1402 fires a parting shot as it rotates around the edge of the sun -- an X1.8 class solar flare and CME.
Mars-Bound Instrument Detects Solar Burst's Effects
This week's solar storm is giving a NASA Mars-bound spacecraft a chance to gauge how such events would affect radiation exposure of future astronauts flying to Mars.
Classifying Solar Eruptions
NOAA has devised categories for solar flares and storms. The biggest flares are known as 'X-class flares' based on a classification system that divides solar flares according to their strength.
News Releases
NASA Spacecraft Returns First Video from Far Side Of The Moon
02.01.12 - A camera aboard one of NASA's twin Gravity Recovery And Interior Laboratory (GRAIL) lunar spacecraft has returned its first unique view of the far side of the moon.NASA Hosts Briefing on New Observations of Interstellar Matter
01.26.12 - NASA will host a Science Update at 1 p.m. EST, Tuesday, Jan. 31, 2012, to discuss new analysis from NASA's Interstellar Boundary Explorer (IBEX) spacecraft of material from outside our solar system and the interstellar boundary region that surrounds our home in space.Montana Students Submit Winning Names for NASA Lunar Spacecraft
01.17.12 - Twin NASA spacecraft that achieved orbit around the moon New Year's Eve and New Year's Day have new names thanks to elementary students in Bozeman, Montana. Their winning entry, "Ebb and Flow," was selected as part of a nation-wide school contest that began in October 2011.NASA and Students to Announce New Names for Twin Lunar Probes
01.12.12 - NASA will host a news conference at 1 p.m. EST, Tuesday, Jan. 17, to announce the names selected from a nationwide student contest for twin spacecraft that will study the moon in unprecedented detail.
Interactive Features
Podcasts
NASACast: Solar System
Audio and Video podcasts on NASA missions exploring our solar system.
NASACast: What's Up?
NASA's monthly guide to watching the night sky.
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