WEBVTT FILE 1 00:00:00.000 --> 00:00:09.390 music 2 00:00:09.410 --> 00:00:10.330 silence 3 00:00:10.350 --> 00:00:15.090 music 4 00:00:15.110 --> 00:00:20.150 The fact that 2012, the date 2012, is close to 2014 is completely a coincidence. 5 00:00:20.170 --> 00:00:26.990 This up and coming solar cycle, roughly 2014, isn't going to be significantly different from the next one 6 00:00:27.010 --> 00:00:30.130 and the next one, and then the previous one. 7 00:00:30.150 --> 00:00:34.510 The sun is what we call and active star, and it has a cycle of activity. 8 00:00:34.530 --> 00:00:40.070 Over 11 years, we go to higher activity and back down to lower activity. 9 00:00:40.090 --> 00:00:45.720 So, this 11 years is fairly steady, and it has been happening through time as far as we can tell. 10 00:00:45.740 --> 00:00:51.100 And we always have solar flares. Some times we have big ones, some times we have small ones. 11 00:00:51.120 --> 00:00:54.190 We live on a planet with a very thick atmosphere. 12 00:00:54.210 --> 00:01:01.610 So, that atmosphere stops all of the harmful radiation that is produced in a solar flare. 13 00:01:01.630 --> 00:01:05.490 Even in the largest events that we've seen in the past 10,000 years, 14 00:01:05.510 --> 00:01:13.530 we see that the effect is not enough to damage the atmosphere so that we are no longer protected. 15 00:01:13.550 --> 00:01:17.320 Coronal mass ejections are happening on the sun all the time. 16 00:01:17.340 --> 00:01:21.250 And they hit the Earth once or twice a week, 17 00:01:21.270 --> 00:01:23.039 sometimes more, 18 00:01:23.060 --> 00:01:26.670 and in general, the effects are minimal. 19 00:01:26.690 --> 00:01:29.929 If we have a really big one, we can have a really strong aurora. 20 00:01:29.950 --> 00:01:34.840 But, then it can effect satellites and power grids, 21 00:01:34.860 --> 00:01:39.350 and these are the kinds of things that people who run these systems know about. 22 00:01:39.370 --> 00:01:40.630 And we have warning. 23 00:01:40.650 --> 00:01:47.900 These CMEs travel at speeds that mean they take probably 2-3 days to get here. 24 00:01:47.920 --> 00:01:49.440 We've learned more and more about storms. 25 00:01:49.460 --> 00:01:52.270 We've learned how to better predict the effects. 26 00:01:52.290 --> 00:01:55.660 Where they are going to go. Where they are going to hit. 27 00:01:55.680 --> 00:02:00.680 As long as we continue paying attention to it and learning more about it, 28 00:02:00.700 --> 00:02:05.000 treating it like we treat a hurricane coming or a huge thunderstorm coming, 29 00:02:05.020 --> 00:02:08.539 we can take appropriate measures to prepare for them. 30 00:02:08.560 --> 00:02:12.420 We understand the sun well enough 31 00:02:12.440 --> 00:02:14.590 with all the technology and all the science 32 00:02:14.610 --> 00:02:19.610 and all of the many spacecraft we have that are monitoring it 24 hours a day, 33 00:02:19.630 --> 00:02:28.420 7 days a week. to know that this stuper storm that's going to wipe out the Earth simply isn't going to happen. 34 00:02:28.440 --> 00:02:30.630 silence 35 00:02:30.650 --> 00:02:42.980 beeping