Three Years of the Sun in Three Minutes

This time-lapse video from NASA's Solar Dynamics Observatory (SDO) show the sun over 3 years time.


The following information comes from NASA. 

This video shows three years of the sun recorded by NASA's Solar Dynamics Observatory (SDO) at a pace of two images per day.

The images shown here are based on a wavelength of 171 Angstroms, which is in the extreme ultraviolet range and shows solar material at around 600,000 Kelvin.

During the course of the video, the sun subtly increases and decreases in apparent size. This is because the distance between the SDO spacecraft and the sun varies over time. The image is, however, remarkably consistent and stable despite the fact that SDO orbits the Earth at 6,876 miles per hour and the Earth orbits the sun at 67,062 miles per hour.

There are several important events that appear briefly in this video. They include the two partial eclipses of the sun by the moon, two roll maneuvers, the largest flare of this solar cycle, comet Lovejoy, and the transit of Venus. The specific time for each event is listed below.

00:30 Partial eclipse by the moon

00:31 Roll maneuver

01:11 August 9, 2011 X6.9 Flare, currently the largest of this solar cycle

01:28 Comet Lovejoy, December 15, 2011

01:42 Roll Maneuver

01:51 Transit of Venus, June 5, 2012

02:28 Partial eclipse by the moon

This video comes via NASAexplorer.

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