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Graphic representing the various Heliophysics disciplines; Sun, Earth, Space Weather, Near-Earth Space and the Magnetosphere.
Science Mission Directorate:

Understanding the Sun, Heliosphere, and Planetary Environments as a single connected system is a goal of the Heliophysics Research Program.

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Latest News

SDO is eclipsed by Earth twice annually. This image is from Sept. 6, 2012.

SDO Enters Its Semiannual Eclipse Season

Twice a year, for three weeks near the equinox, SDO moves into its eclipse season -- a time when Earth blocks its view of the sun for a period of ...

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As part of a celebration of 35 years of flight for NASA's Voyager spacecraft, a crowd of engineers and scientists at NASA's Jet Propulsion Laboratory

Cheers, Voyager: 35 Years of Exploration

Thirty-five years ago today, NASA's Voyager 1 spacecraft launched on its mission of exploration. JPL hosted a birthday party in its honor.

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SDO recorded this view of an M5.6 class solar flare at 9:01pm EDT on August 17, 2012.

Emerging Sunspot Releases Mid-level Solar Flare

An active region, just beginning to rotate into view, released an M5.6 class solar flare last night at 9:01pm EDT.

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Graphic of the space environment with the sun (right), the Earth (left) and solar satellites in between.

Public Briefing: Solar and Space Physics Decadal Survey

The National Research Council's second decadal survey in solar and space physics is scheduled for release at 1pm EDT on August 15, 2012.

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Image of a very long, whip-like solar filament extending over half a million miles in a long arc above the sun’s surface.

One Half Million Mile Solar Filament

SDO sees a very long, whip-like solar filament extending over half a million miles in a long arc above the sun’s surface. Part of the filament seems ...

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Press Releases

  • NASA Launches Radiation Belt Storm Probes Mission

    08.30.12 - NASA's Radiation Belt Storm Probes (RBSP), the first twin-spacecraft mission designed to explore our planet's radiation belts, launched into the predawn skies at 4:05a.m. EDT Thursday from Cape Canaveral Air Force Station, Fla.

  • RBSP Launches - Twin Probes in Orbit

    08.30.12 - NASA's Radiation Belt Storm Probes are flying in Earth orbit after a successful liftoff this morning. The spacecraft are now at home in the Van Allen belts.

Feature Stories

  • The faint oval hovering above the upper left limb of the sun in this picture is known as a coronal cavity.

    NASA's Solar Fleet Peers Into Coronal Cavities

    By understanding the morphology, density and temperature of coronal cavities scientists can better understand eruptions on the sun and the space weather that can disrupt technologies near Earth.

  • RBSP Mission Operations Center at Johns Hopkins APL

    Hours After Launch, RBSP Takes First Science Steps

    Immediately after launch, RBSP entered a 60-day commissioning phase of operations, where all of the spacecrafts’ systems and instruments are activated, monitored, and made ready for the two-year primary science mission.

  • RBSP spacecraft with EMFISIS instruments labeled.

    New 'Chorus' Recording By RBSP's EMFISIS Instrument

    Radio waves, recorded by RBSP's EMFISIS instrument, are at frequencies that are audible to the human ear and are emitted by the energetic particles in the Earth’s magnetosphere.

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