1 00:00:00,010 --> 00:00:04,000 [music throughout] On April 2 -3, 2017, the sun let off a trio of mid-level flares. 2 00:00:04,020 --> 00:00:08,000 This is what was seen by NASA's Solar Dynamics Observatory. 3 00:00:08,020 --> 00:00:12,050 4 00:00:12,070 --> 00:00:16,090 5 00:00:16,110 --> 00:00:20,090 6 00:00:20,110 --> 00:00:24,120 7 00:00:24,140 --> 00:00:28,140 8 00:00:28,160 --> 00:00:32,160 9 00:00:32,180 --> 00:00:36,170 10 00:00:36,190 --> 00:00:40,180 11 00:00:40,200 --> 00:00:44,180 12 00:00:44,200 --> 00:00:48,190 13 00:00:48,210 --> 00:00:52,200 14 00:00:52,220 --> 00:00:56,220 15 00:00:56,240 --> 00:01:00,230 16 00:01:00,250 --> 00:01:04,260 17 00:01:04,280 --> 00:01:08,270 18 00:01:08,290 --> 00:01:12,280 19 00:01:12,300 --> 00:01:16,310 tone 20 00:01:16,330 --> 00:01:20,310 beeping 21 00:01:20,330 --> 00:01:22,429