Browse Archive

  • Still from video of Jan 19, 2012 long duration solar flare and coronal mass ejection

    01.19.2012-Long Duration M3.2 Class Solar Flare and CME

    01.19.12 - After a two month respite from Earth-directed solar events, the Sun sends an M3.2 class flare and CME our way.

  • Holly Gilbert

    Gerald Soffen Lecture Series: Dr. Holly Gilbert - Unlocking the Secrets of the Sun

    On Thursday, Jan. 12, 2012, Dr. Holly Gilbert will discuss the amazing strides scientists have made in understanding the inner workings of our sun over the last 50 years. The lecture will start promptly at 7 p.m., and registration in advance is required.

  • Artist concept of space weather showing an active Sun with flares and a CME in the upper right, the Earth in the lower right with types of technology affected by space weather to the lower left; satellites, airplanes, the ISS and ground-based electrical lines.

    Heliophysics at AGU: December 2011

    12.02.11 - NASA's Heliophysics Division's workshop for the Fall 2011 AGU meeting: "Getting Ready for Solar Max: Separating Fact from Fiction on Impacts of Space Weather".

  • Close-up of solar flare from November 3, 2011 as captured by SDO.

    A 360 Degree View of an X-class Flare and A CME

    11.04.11 - The sun sent out two different kinds of solar activity on November 3, 2011 in different directions: an X.19 solar flare and a particularly bright CME.

  • On Jan. 4, 2011, the Hinode satellite captured a breathtaking view of an annular solar eclipse.

    NASA Chat: The Sun Has a 'Cirtain' Flare

    10.27.11 - While our sun is usually a kind and beneficial space neighbor, we sometimes feel its "moodiness" here on Earth. On Oct. 27, NASA expert Dr. Jonathan Cirtain answered your questions about the sun.
    › Chat Transcript (PDF, 312 Kb)

  • An all-red aurora captured in Independence, Mo., on October 24, 2011.

    Beautiful Red Aurora

    10.25.11 - A coronal mass ejection (CME) shot off the sun late in the evening of October 21 and hit Earth on October 24 at about 2 PM ET causing red aurora in the U.S.

  • Solar Week 2011 Promo

    Students Invited to Study the Sun During Solar Week

    10.19.11 - Solar Week provides a week-long series of web-based educational activities for classrooms about our magnetic variable star, the sun, and its interactions with Earth and the solar system.

  • Merged stills from the video show the approach of the comet on the right and the CME on the left.

    Incoming Comet; Outgoing CME

    10.04.11 - On October 2, 2011, an exceptionally bright comet headed toward the sun and disintegrated; moments later a large coronal mass ejection (CME) blew off the other side of the sun.

  • An X1.4 class flare erupted from the sun, peaking at 7:01 AM ET on September 22, 2011.

    A Solar Flare and a CME

    09.22.11 - Our increasingly active Sun produced a large CME yesterday evening and an X1.4 class flare this morning. This increased solar activity is a normal byproduct as the sun approaches solar max.

  • Screen capture from video of one of six CMEs that blasted off the Sun in a 24 hour period.

    Six CMEs in 24 Hours

    09.20.11 - The sun let loose with at least six coronal mass ejections (CMEs) from 7 PM ET on September 18, 2011 until 1 PM on September 19. One may impact Earth and spark aurora tomorrow.

  • View of aurora was taken from ISS on September 17, 2011.

    Aurora From ISS Orbit

    09.22.11 - This view of the aurora from Earth orbit was taken from the International Space Station as it crossed over the southern Indian Ocean on September 17, 2011.

  • The northern lights on Sept. 10 were bright enough to reflect in the aptly named Northern Lights Lake below.

    Solar Activity Subsiding - Auroras Ablaze

    09.12.11 - After last week's flurry of strong flares from sunspot 1283, solar activity is subsiding as this sunspot rotates over the sun's western limb. Aurora from last week's solar activity will be dancing in the sky for the next several day.

  • A third flare erupted from sunspot 1283 on September 7 at 6:36 PM ET

    Sunspot 1283 Is Bristling With Flares-UPDATED

    09.08.11 - The first of what will likely be several CME hits occurred this morning sparking a strong geomagnetic storm. Additional hits will occur over the weekend.

  • Sunspot 1283 erupted with another flare on 09.06.11 that peaked at 6:20 PM ET.

    X2.1 Solar Flare and CME

    09.07.11 - Sunspot 1283 erupted with another flare yesterday that peaked at 6:20 PM ET. This was an X2.1 class flare, some four times stronger than the earlier flare.

  • The flare is seen here near the center of this image from SDO in 171 angstrom.

    M5.3 Solar Flare Eruption-CME

    09.06.11 - At 9:35 PM ET on Labor Day, the sun emitted an Earth-directed M5.3 class flare as measured by the GOES satellite.