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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...
  3. 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...
  7. 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...
  10. 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...
  12. Dr. Thomas Duvall, Jr., wins the 2014 AAS/SPD Hale Prize

    http://2.bp.blogspot.com/-gwkuKuSjMes/U425y_8O6EI/AAAAAAAAAp0/UKoMK6fQIg8/s320/IMG_0359.jpg
    Last night the Solar Physics Division of the American Astronomical Society awarded their highest honor to...
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    EVE MEGS-A and SAM have been Turned Off

    I am very sad to say that SDO has decided to turn off EVE MEGS-A and EVE SAM. The EVE MEGS-A/SAM instrument has had a failure in the CCD electronics. The EVE team is looking at ways to start them...
  14. X-class Solar Flares from Space and the Ground!

    Wondering what else we need to know to understand X-class solar flares? Join SDO and others on a Google+ Hangout today at 2:30 pm ET. We will describe an X1 flare that happened 29-Mar-2014. It was...
  15. Thread: Today's Maneuvers

    by SDO
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    Today's Maneuvers

    Today, 23-Apr-2014, SDO will perform two maneuvers. First up is the EVE Field of View, starting at 1315 UTC (9:15 am ET). Second is the HMI/AIA Flatfield, starting at 1630 UTC (12:30 pm ET). During...
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    An Astronomical Picture of SDO

    http://2.bp.blogspot.com/-kvBsnnyduA0/U1Vf32ATkHI/AAAAAAAAAoc/VoPFApJ25KE/s640/geo.29Mar2014.ID.cp.jpg

    One of the cool thing about knowing astronomers is the clever things they do with cameras....
  17. Thread: HMI Roll Tonight

    by SDO
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    HMI Roll Tonight

    Tonight, April 9, 2014, from 0519-1200 UTC (1:19 am - 8:00 am ET). SDO will execute the HMI Roll maneuver. The spacecraft will spin 360 degrees about the line to the Sun center. It stops along the...
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    EVE Cruciform on April 2, 2014

    http://4.bp.blogspot.com/-PMRhy-IAHhw/Uz1sELtgGKI/AAAAAAAAAoA/yydeOyWVpxw/s320/20140402_212404_512_0171.jpg
    Yesterday, between 1730 and 2230 UTC (1:30 pm to 6:30 pm ET) SDO did the EVE cruciform...
  19. X-1 Flare Yesterday with a Nice Coronal Dimming

    The X-1 flare on Saturday produced a very nice example of coronal dimming. Here is a short movie showing five hours of the Sun in the AIA 193 passband. After the flare happens in the upper right...
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    Momentum Management Maneuver Today

    Today at 1840 UTC (2:40 pm ET) SDO will execute a momentum management maneuver. For about 45 minutes from 1815 to 1900 UTC SDO data may be unavailable.



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