NASA | SDO: Year 5

328 views December 26, 2015 asteroidday 0

February 11, 2015 marks five years in space for NASA’s Solar Dynamics Observatory, which provides incredibly detailed images of the whole sun 24 hours a day. Capturing an image more than once per second, SDO has provided an unprecedentedly clear picture of how massive explosions on the sun grow and erupt ever since its launch on Feb. 11, 2010. The imagery is also captivating, allowing one to watch the constant ballet of solar material through the sun’s atmosphere, the corona.

In honor of SDO’s fifth anniversary, NASA has released a video showcasing highlights from the last five years of sun watching. Watch the movie to see giant clouds of solar material hurled out into space, the dance of giant loops hovering in the corona, and huge sunspots growing and shrinking on the sun’s surface.

The imagery is an example of the kind of data that SDO provides to scientists. By watching the sun in different wavelengths – and therefore different temperatures – scientists can watch how material courses through the corona, which holds clues to what causes eruptions on the sun, what heats the sun’s atmosphere up to 1,000 times hotter than its surface, and why the sun’s magnetic fields are constantly on the move.

Five years into its mission, SDO continues to send back tantalizing imagery to incite scientists’ curiosity. For example, in late 2014, SDO captured imagery of the largest sun spots seen since 1995 as well as a torrent of intense solar flares. Solar flares are bursts of light, energy and X-rays. They can occur by themselves or can be accompanied by what’s called a coronal mass ejection, or CME, in which a giant cloud of solar material erupts off the sun, achieves escape velocity and heads off into space. In this case, the sun produced only flares and no CMEs, which, while not unheard of, is somewhat unusual for flares of that size. Scientists are looking at that data now to see if they can determine what circumstances might have led to flares eruptions alone.

Goddard built, operates and manages the SDO spacecraft for NASA’s Science Mission Directorate in Washington, D.C. SDO is the first mission of NASA’s Living with a Star Program. The program’s goal is to develop the scientific understanding necessary to address those aspects of the sun-Earth system that directly affect our lives and society.

  • Arshad says:

    Ok, I swa the exact same thing, at about 4000 feet, but I had 3, not 2, so completely paerllal flight pattern, same speeds,, this was Saturday Sept 2, in Markham, just south or Stouffville by about 10 km at 16th avenue and 9th line. Yelled for the wife as I knew instantaneously that this was not anything I had ever seen, not just so reflection. Too perfect in the pattern, my wife came ot the other side of the house, another deck and saw them as well. We photographed and it did not turn out, a perfect night and they were in clear sight. Nope, no booze, no nothing, occured at about 10pm. Made me rethink my 40 years of , what are you, an idiot, only in the movie and lay off the pipe reactions when hearing this. Truly astonishing. Great that there is video. These are the same guys and I guess they had a third on the night I saw them. Could be something here. What the hell is so interesting about Stouffville, York region?

    February 18, 2016 at 10:52 pm

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