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    Another Lunar Transit, November 22, 2014

    SDO will experience the third lunar transit this year on November 22, 2014. Here is the FOT movie predicting what we will see during the transit.

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    EVE Cruciform Today

    The EVE cruciform is today starting at 1800 UTC. During this maneuver the spacecraft rocks back and forth, helping EVE to maintain an accurate calibration.

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    It's Coming Around Again!

    Active Region 12192, which was the location of 6 X-class and several M-class flares in late October, is coming back for an encore. Here is a movie of the Sun showing the magnetic field on the side...
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    Repairs are Complete, JSOC is Live!

    The fiber optics cable is repaired and data is flowing to the JSOC. It's good to see the Sun!

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    JSOC Images Unavailable

    http://1.bp.blogspot.com/-sADJlH7vMxs/VFpuG9khl6I/AAAAAAAAAtQ/K1ji8X2L0L8/s320/Images_Unavailable.png
    The SDO JSOC is recovering from an internal disruption and images are unavailable. This outage...
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    Happy Halloween from Olde Sol

    http://1.bp.blogspot.com/-1Kq06PFq21g/VFOHyfyfqII/AAAAAAAAAtA/_8euBL03kcQ/s400/halloween-sun.jpg
    Just in time for Halloween, AIA sees a Jack O'Lantern in the Sun!

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    What an Active Region!

    http://3.bp.blogspot.com/-Ut9F4urQpkU/VE63sPJrTqI/AAAAAAAAAso/x1ola71HWhM/s320/20141023_161500_4096_HMIIC.jpg
    What an active region 12192 has been! Seven X-class flares in 9 days. Here is an HMI...
  8. Thread: It's Flare Season!

    by SDO
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    It's Flare Season!

    http://3.bp.blogspot.com/-r8gDgzkQYBY/VEf0rwluOrI/AAAAAAAAAsY/pmdDh073viw/s320/20141022_144210_1024_HMII.jpg
    Active Region 12192 has grown to 2410 millionths of a solar hemisphere (0.2410 % of one...
  9. Fall 2014 Eclipse Season Ends; Lunar Transit is Next

    http://1.bp.blogspot.com/-ildnY2hbr-w/VCFuPWMUAdI/AAAAAAAAAr4/QC5RQLdaohc/s320/20140922_061401_512_0211.jpg
    Yesterday saw the end of the Fall 2014 eclipse season. If you look carefully in the upper...
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    Stationkeeping Burn #9 and an X1.6 Flare

    Stationkeeping burn #9 will happen today (September 10, 2014) at 2215 UTC (6:15 p.m. ET). SDO data will be unavailable for about 30 minutes starting 2200 UTC (6:00 p.m. ET). This burn was delayed...
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    View Post

    http://1.bp.blogspot.com/-l9smDX05nyY/VAOS4NGJF8I/AAAAAAAAArg/BwiDmih98w4/s320/Screen%2BShot%2B2014-08-31%2Bat%2B4.25.04%2BPM.png

    Here is an illustration of a rocket flight from the surface of...
  12. Solar Dynamics Observatory Captures Images of a Late Summer Flare

    http://www.nasa.gov/sites/default/files/20140824_0304_171.jpg

    On Aug. 24, 2014, the sun emitted a mid-level solar flare, peaking at 8:16 a.m. EDT. NASA's Solar Dynamics Observatory captured...
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    Upcoming Maneuvers and Activities

    On Friday August 29, 2014 the Fall 2014 eclipse season begins. Each day until September 21 the Earth will pass through the SDO telescopes' fields of view. These are opportunities to see the...
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    Why NASA Studies the Ultraviolet Sun

    http://www.nasa.gov/sites/default/files/sdoprocessv3.png
    You cannot look at the sun without special filters, and the naked eye cannot perceive certain wavelengths of sunlight. Solar physicists must...
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    Momentum Management Maneuver #20 is Today

    SDO will execute Momentum Management Maneuver #20 today from about 1915-1945 UTC (3:15-3:45 p.m. ET). This Delta-H burn is used to keep the reaction wheels within their speed limits. During the...
  16. Thread: This Week in SDO

    by SDO
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    This Week in SDO

    On July 9 SDO did the EVE FOV and HMI/AIA Flatfield maneuvers. You may have seen the images from AIA wiggle and blur during these maneuvers. This is a normal part of running a solar observatory in a...
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    What Is a Magnetic Field?

    Recently I was working at the City Skies Solar Workshop at the Franklin Institute. This program brings middle school teachers and community center leaders together to provide STEM activities at the...
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    @NASA_SDO Won't Tweet Anymore

    The @NASA_SDO and @NASA_SDO_EDU Twitter feeds are changing. The main feed, @NASA_SDO, has ended and traffic will be redirected to @NASASunEarth. The teacher feed, @NASA_SDO_EDU, is now being handled...
  19. Another Double Whammy from Active Region 12087!

    http://1.bp.blogspot.com/--DJ6GWphLnU/U5hEbNGx0kI/AAAAAAAAAqI/E1pxvpLDHAk/s320/20140611_091426_1024_0094.jpg
    Active Region 12087 rotated into view yesterday and produced 2 X-class flares. This...
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    Great Day in the Mornin', A Double X-flare

    This morning a new active region rotated into view on the solar disk and promptly emitted two X-class flares. Here is a movie of the first flare in the AIA 1600 passband. It peaked in the NOAA X-ray...
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