1 00:00:11,911 --> 00:00:12,629 Okay. 2 00:00:12,629 --> 00:00:14,397 So a solar eclipse happens 3 00:00:14,397 --> 00:00:18,068 when the moon moves directly between the earth and the sun. 4 00:00:18,151 --> 00:00:20,253 And with 5 00:00:20,253 --> 00:00:23,373 an annular eclipse, the moon is a little bit farther away 6 00:00:23,373 --> 00:00:24,841 than it ordinarily might be. 7 00:00:24,841 --> 00:00:27,727 So it doesn't quite cover the entire disk of the sun. 8 00:00:27,727 --> 00:00:31,448 And it leaves this ring, shape or annulus 9 00:00:31,531 --> 00:00:31,981 behind. 10 00:00:31,981 --> 00:00:42,125 And we call it an annular solar eclipse. 11 00:00:42,208 --> 00:00:42,826 sure. 12 00:00:42,826 --> 00:00:45,662 You want to make sure that you're using these special safety glasses? 13 00:00:45,662 --> 00:00:46,980 These special solar viewing 14 00:00:46,980 --> 00:00:51,067 glasses that you can pick up at public libraries and other locations. 15 00:00:51,151 --> 00:00:55,238 But you want to make sure you have those on any time you're looking at the eclipse. 16 00:00:55,321 --> 00:00:57,540 Otherwise, you can have some serious eye damage. 17 00:00:57,540 --> 00:01:00,977 If you don't have a pair of these these solar glasses. 18 00:01:01,227 --> 00:01:04,230 You can take a simple piece of paper and poke a little hole in it 19 00:01:04,380 --> 00:01:05,815 and hold it up over the sidewalk. 20 00:01:05,815 --> 00:01:09,886 And it'll actually project an image of the sun down onto that surface. 21 00:01:10,103 --> 00:01:11,421 And you can view it that way. 22 00:01:11,421 --> 00:01:14,707 If you don't have a piece of paper, you can actually just use your hand. 23 00:01:14,791 --> 00:01:18,461 You can make a little bitty hole or look you can 24 00:01:18,528 --> 00:01:22,398 look and see a small hole in in between your fingers and you hold that up 25 00:01:22,649 --> 00:01:26,469 over the sidewalk, over your other hand, over a pretty much anything, 26 00:01:26,536 --> 00:01:39,232 and actually create that pinhole camera effect just using your hand. 27 00:01:39,315 --> 00:01:41,117 Oh, certainly. 28 00:01:41,117 --> 00:01:43,369 My my favorite example are the sounding rockets 29 00:01:43,369 --> 00:01:47,474 that they're going to be launching from White Sands Missile Range in New Mexico. 30 00:01:47,690 --> 00:01:50,577 They're going to be launching one just before the eclipse, one 31 00:01:50,577 --> 00:01:53,563 during the eclipse, and our other one just after the eclipse. 32 00:01:53,813 --> 00:01:54,798 And measuring things 33 00:01:54,798 --> 00:01:59,152 like atmospheric temperature, the number of electrons that they detect 34 00:01:59,235 --> 00:02:02,238 in their instruments as they move through the sky. 35 00:02:02,422 --> 00:02:06,176 And they're going to be studying how the ionosphere, a charged particle 36 00:02:06,176 --> 00:02:11,247 layer in the upper atmosphere changes with time because the solar input, 37 00:02:11,481 --> 00:02:15,535 the solar, the sunlight moving into the atmosphere is lower during an eclipse. 38 00:02:15,652 --> 00:02:19,906 So seeing how that changes with time is of particular 39 00:02:19,906 --> 00:02:28,948 scientific interest. 40 00:02:29,015 --> 00:02:30,316 Certainly 41 00:02:30,316 --> 00:02:32,886 for the eclipse in April, the moon is actually going to be 42 00:02:32,886 --> 00:02:37,006 just a little bit closer to us than it is than it is tomorrow. 43 00:02:37,090 --> 00:02:40,593 And so it will perfectly cover the disk of the sun 44 00:02:40,593 --> 00:02:43,596 and we'll see what's called a total solar eclipse. 45 00:02:43,596 --> 00:02:47,200 Now, in this case, the the atmosphere of the sun, 46 00:02:47,200 --> 00:02:50,270 the sorry, the surface of the sun is completely covered. 47 00:02:50,470 --> 00:02:54,007 And all we're going to be able to see is this wispy outermost 48 00:02:54,007 --> 00:02:57,443 layer of of the sun's atmosphere called the corona. 49 00:02:57,527 --> 00:03:02,932 And it looks like crazy hair moving away from moving away from the disk of the sun. 50 00:03:03,016 --> 00:03:04,234 We never, ever 51 00:03:04,234 --> 00:03:07,487 get to see that except during a total eclipse. 52 00:03:07,570 --> 00:03:11,891 So it's a very special occasion, and I hope folks make time to go out 53 00:03:11,891 --> 00:03:20,700 and actually take a look at it. 54 00:03:20,783 --> 00:03:23,303 I'm very excited, both as a scientist 55 00:03:23,303 --> 00:03:27,156 and as and as a as a person, as a regular person. 56 00:03:27,240 --> 00:03:32,128 I mean, the science opportunities are we're really excited about the science 57 00:03:32,128 --> 00:03:35,181 opportunities that we've got lined up with, of course, the sounding rockets. 58 00:03:35,181 --> 00:03:38,368 But we're also going to be having instrumentation on on high altitude 59 00:03:38,368 --> 00:03:41,371 airplanes, taking all sorts of measurements of the sun. 60 00:03:41,487 --> 00:03:44,741 But from a personal perspective, I 61 00:03:44,807 --> 00:03:46,793 this is going to be my first total eclipse. 62 00:03:46,793 --> 00:03:51,247 And I'm really excited to get out and actually experience it firsthand. 63 00:03:51,331 --> 00:03:56,519 I know that when the eclipse is happening, then, of course, the lighting changes. 64 00:03:56,519 --> 00:03:58,187 I mean, that kind of makes sense. 65 00:03:58,187 --> 00:04:01,407 But because of that lighting change, the temperature comes down. 66 00:04:01,491 --> 00:04:03,676 Birds actually morning birds start to chirp. 67 00:04:03,676 --> 00:04:06,729 I'm looking forward to hearing the robins chirping. 68 00:04:06,796 --> 00:04:11,167 Animals tend to get ready for bed and so on. 69 00:04:11,251 --> 00:04:14,087 And it's just a it's a singular moment in time 70 00:04:14,087 --> 00:04:17,457 where you get to see something along with, of course, you know, several billion 71 00:04:17,457 --> 00:04:20,710 of your other of your closest friends. 72 00:04:20,777 --> 00:04:23,062 You get to see this firsthand, this unique 73 00:04:23,062 --> 00:04:34,691 opportunity, firsthand. 74 00:04:34,757 --> 00:04:37,010 Well, first, go out and watch it. 75 00:04:37,010 --> 00:04:39,679 Go out and actually experience this for yourself. 76 00:04:39,679 --> 00:04:42,031 These things don't happen all that often. 77 00:04:42,031 --> 00:04:44,817 They happen fairly regularly, of course, 78 00:04:44,817 --> 00:04:48,004 but most of the time they happen out over the oceans. 79 00:04:48,087 --> 00:04:50,873 It's rare when they actually happen over populated areas. 80 00:04:50,873 --> 00:04:55,812 So take the opportunity and go out and witness this. 81 00:04:55,878 --> 00:04:59,699 There's going to be a number of number of events at different places 82 00:04:59,782 --> 00:05:04,504 throughout the country, mostly along the path path of the eclipse, 83 00:05:04,587 --> 00:05:09,659 where you can go out and interact with folks from NASA and educators 84 00:05:09,659 --> 00:05:15,214 and so on to actually really engage in this particular opportunity. 85 00:05:15,298 --> 00:05:19,452 And finally, again, I'll point back to the citizen science opportunities. 86 00:05:19,519 --> 00:05:23,773 These are events and phone apps and a number of other things 87 00:05:23,840 --> 00:05:27,694 where you're actually able to help help NASA's scientists take data, 88 00:05:27,777 --> 00:05:31,814 you know, measure temperatures and talk about things like how how the 89 00:05:31,831 --> 00:05:35,151 eclipse made you feel and what you witnessed in the behavior 90 00:05:35,151 --> 00:05:38,938 of animals and other people and the atmosphere and so on. 91 00:05:39,022 --> 00:05:49,048 It's a great opportunity to get involved. 92 00:05:49,132 --> 00:05:51,501 We have a lot of information out there. 93 00:05:51,501 --> 00:05:56,272 The easiest place to go is go dot nasa.gov slash eclipse. 94 00:05:56,356 --> 00:05:59,642 You can also find more information about activities. 95 00:05:59,726 --> 00:06:04,263 How to build, how to build a pinhole camera that I mentioned earlier 96 00:06:04,330 --> 00:06:07,316 and a whole bunch of other activities that you and children 97 00:06:07,316 --> 00:06:10,303 and pretty much anyone can participate in. 98 00:06:10,453 --> 00:06:12,855 So again that's go dot NASA's dot gov 99 00:06:12,855 --> 00:06:16,642 slash eclipse as well as on social media with at NASA's sun.