Browse Archive

  • This collage of solar images from NASA's Solar Dynamics Observatory (SDO) shows how observations of the sun in different wavelengths helps highlight different aspects of the sun's surface and atmosphere.

    Goddard Sunday Experiment about SDO Solar Mission

    01.10.13 - NASA's Goddard Visitor Center will host this month's Sunday Experiment on Sunday, Jan. 20 from 1 to 3 p.m. EST around the SDO mission.

  • Local Media Invited to NASA Goddard for Transit of Venus Event

    05.29.12 - Local media are invited to NASA's Goddard Space Flight Center's public event on June 5 from 5 to 8 p.m. EDT to celebrate the Transit of Venus.

  • Poster advertising the Venus Transit

    Public Invited to Goddard Visitor Center For Transit of Venus

    05.24.12 - The public is invited to the Goddard Visitor Center for our Transit of Venus watch party and celebration that will include presentations, near real-time SDO images of the transit and other events.

  • New NASA Solar Exhibit at Maryland Science Center

    02.06.12 - A new interactive NASA art exhibit opens February 9 at the Maryland Science Center in Baltimore that will showcase stunning images of the sun.

  • NASA Spacecraft Observes New Characteristics Of Solar Flares

    09.07.11 - NASA's Solar Dynamics Observatory, or SDO, has provided scientists new information about solar flares indicating an increase in strength and longevity that is more than previously thought.

  • NASA Hosts Media Teleconference on Solar Flare Characteristics

    09.01.11 - NASA will host a media teleconference at 1 p.m. EDT on Wednesday, Sept. 7, to discuss new observations about solar flares that can impact communication and navigation systems.

  • NASA-Sponsored Research Explains Missing Sunspots

    03.02.11 - NASA-sponsored research has resulted in the first computer model that explains the recent period of decreased solar activity during the sun's 11-year cycle.

  • NASA Announces Media Teleconference to Explain Missing Sunspots

    02.28.11 - NASA will host a media teleconference at 1 p.m. EST on Thursday, March 3, to discuss the first computer model that explains the recent period of decreased solar activity during the sun's 11-year cycle.

  • Spacecraft Reveals Small Solar Events Have Large Scale Effects

    05.25.10 - NASA's Solar Dynamics Observatory, or SDO, has allowed scientists for the first time to comprehensively view the dynamic nature of storms on the sun.

  • SDO Day 83: EVE Calibration Rocket Launch

    05.04.10 - Check out the launch of the EVE calibration rocket at It shows the countdown and the rocket flying away.   More...

  • SDO EVE Calibration Rocket Launch Day

    05.03.10 - Today, May 3, at 2:12 pm ET/12:12 pm MT the SDO EVE calibration rocket will launch from White Sands Missile Range, NM. Everything is looking good for an on time launch. No real time video is allowed due to security reasons on the Missile Range, but the CCD data and video from the cameras (one pointing forward, one aft) will be posted as soon as possible.   More...

  • SDO Day 78: Just the CCD Facts

    04.28.10 - SDO has 10 CCDs, 8 inside the science instruments and 2 in the star trackers. The science CCDs operate at very low temperatures. The EVE CCDs are 2Kx2K pixels and operate at -100 C. The HMI and AIA CCDs are 4Kx4K and operate at about -70 C. HMI has 2 high-grade visible light CCDs while AIA and EVE treated their CCDs to make them more suitable for detecting extreme ultraviolet light.   More...

  • SDO Day 76: Getting Ready for Science Data

    04.26.10 - SDO is moving toward becoming an operational science mission. The data will be available from several sites in a variety of formats. SDO scientists and engineers are working to set up those access points, but we won't be ready for regular data releases until mid-May. Next step is the EVE calibration rocket, scheduled to fly on May 3, 2010 from the White Sands Missile Range.

  • SDO Day 73: The End of Jitter Testing

    04.23.10 - Thursday marked the end of image quality jitter testing on SDO. For the past few days the observatory has spun reaction wheels, rotated high-gain antennas, and moved filter wheels. All this to see how each mechanism affected the staring at the Sun. All of the data must now be analyzed and our fine pointing refined to allow us to stare at the Sun. This week also saw the isolation of the main engine. More...

  • The Sun with prominence visible in the upper left taken by the AIA instrument on board SDO.

    SDO Day 72: First Light Data is Released

    04.22.10 - The principal investigators of the SDO science investigation teams, Philip Scherrer (HMI), Alan Title (AIA), and Tom Woods (EVE) joined Dean Pesnell and Lika Guharthakurta in an SDO First Light press conference yesterday at the Newseum in Washington, DC. The announcement has garnered a lot of press and many examples of those few solar events that saw fit to appear between March 30 and April 8 are now available. More...