WEBVTT FILE 1 00:00:00.000 --> 00:00:04.030 music 2 00:00:04.050 --> 00:00:08.050 3 00:00:08.070 --> 00:00:12.130 On March 29, 2014 4 00:00:12.150 --> 00:00:16.190 an X-class flare burst off the sun and vaulted into history. 5 00:00:16.210 --> 00:00:20.260 as the best observed flare of all time. 6 00:00:20.280 --> 00:00:24.280 The flare was witnessed by four different NASA observatories and one ground-based observatory. 7 00:00:24.300 --> 00:00:28.330 Each telescope captures a different aspect of the flare at a different 8 00:00:28.350 --> 00:00:32.380 height off the sun's surface. Working together, NASA's 9 00:00:32.400 --> 00:00:36.440 Heliophysics Fleet will help scientists better understand what sets off these 10 00:00:36.460 --> 00:00:40.590 large explosions on the sun. 11 00:00:40.610 --> 00:00:44.670 These images were taken using NASA's Solar Dynamics Observatory, or SDO. 12 00:00:44.690 --> 00:00:48.700 It specializes in capturing images of the entire sun at once. 13 00:00:48.720 --> 00:00:52.710 A close up shot captures some detail, but not at extremely high resolution. 14 00:00:52.730 --> 00:00:56.730 IRIS watches a range of layers in the sun's 15 00:00:56.750 --> 00:01:00.780 lower atmosphere. IRIS follows a well-planned schedule to 16 00:01:00.800 --> 00:01:04.810 observe small areas on the sun in high resolution. 17 00:01:04.830 --> 00:01:08.830 It was fortuitously pointed on this active region of the sun, in the hopes of catching a flare. 18 00:01:08.850 --> 00:01:12.870 This is the first X-class flare seen by the spacecraft. 19 00:01:12.890 --> 00:01:16.890 The RHESSI spacecraft can only see material at extreme temperatures. 20 00:01:16.910 --> 00:01:20.950 on the sun. To RHESSI, a flare looks like three pockets of 21 00:01:20.970 --> 00:01:24.990 heat in a triangle formation. There are two points on the bottom, 22 00:01:25.010 --> 00:01:29.010 showing foot points, and a third at the top of the flare. 23 00:01:29.030 --> 00:01:33.060 The Japan Aerospace Exploration Agency's and NASA's Hinode 24 00:01:33.080 --> 00:01:37.110 shows a series of layers in the sun's atmosphere. The images from Hinode's 25 00:01:37.130 --> 00:01:41.140 x-ray telescope show how material progresses from the lowest part of the 26 00:01:41.160 --> 00:01:45.170 atmosphere, called the chromosphere, upward through the heart of the flare, 27 00:01:45.190 --> 00:01:49.210 up to over three thousand miles above the surface. 28 00:01:49.230 --> 00:01:53.270 These images were captured by the National Solar Observatory's 29 00:01:53.290 --> 00:01:57.330 Dunn Solar Telescope in New Mexico. 30 00:01:57.350 --> 00:02:01.380 The telescope can watch only a small area at once, but it provides much higher resolution each area. 31 00:02:01.400 --> 00:02:05.440 The March 29th flare fortunately coincided with the best time of day 32 00:02:05.460 --> 00:02:09.510 for viewing from the ground. 33 00:02:09.530 --> 00:02:13.550 When combined, this comprehensive of one single flare will shed light on 34 00:02:13.570 --> 00:02:17.660 many future discoveries. 35 00:02:17.680 --> 00:02:21.710 music 36 00:02:21.730 --> 00:02:30.564 beeping