1 00:00:09,560 --> 00:00:06,380 solar eclipse in the USA presented by 2 00:00:12,230 --> 00:00:09,570 science at NASA mark your calendar on 3 00:00:15,079 --> 00:00:12,240 Sunday May twentieth the Sun is going to 4 00:00:17,570 --> 00:00:15,089 turn into a ring of fire it's an annular 5 00:00:20,689 --> 00:00:17,580 solar eclipse the first one in the USA 6 00:00:23,029 --> 00:00:20,699 in almost 18 years an annular eclipse 7 00:00:25,490 --> 00:00:23,039 occurs when the moon passes directly in 8 00:00:27,109 --> 00:00:25,500 front of the Sun but the lunar disc is 9 00:00:30,710 --> 00:00:27,119 not quite wide enough to cover the 10 00:00:33,530 --> 00:00:30,720 entire star at maximum the moon forms a 11 00:00:35,360 --> 00:00:33,540 black hole in the center of the Sun the 12 00:00:38,090 --> 00:00:35,370 path of annual arity is a strip about 13 00:00:40,880 --> 00:00:38,100 300 kilometers wide and thousands of 14 00:00:43,340 --> 00:00:40,890 kilometers long it stretches from China 15 00:00:45,619 --> 00:00:43,350 and Japan across the Pacific Ocean to 16 00:00:47,779 --> 00:00:45,629 the middle of north america in the 17 00:00:49,880 --> 00:00:47,789 united states the afternoon sun will 18 00:00:52,910 --> 00:00:49,890 become a luminous ring in places such as 19 00:00:55,880 --> 00:00:52,920 Medford Oregon Chico California Reno 20 00:00:58,970 --> 00:00:55,890 Nevada st. George Utah Albuquerque New 21 00:01:00,920 --> 00:00:58,980 Mexico and Lubbock Texas outside of this 22 00:01:03,290 --> 00:01:00,930 relatively narrow zone the eclipse will 23 00:01:04,789 --> 00:01:03,300 be partial observers almost everywhere 24 00:01:06,590 --> 00:01:04,799 west of the Mississippi will see a 25 00:01:09,080 --> 00:01:06,600 crescent-shaped Sun as the moon passes 26 00:01:10,789 --> 00:01:09,090 by off-center I like to compare 27 00:01:13,010 --> 00:01:10,799 different types of eclipses on a scale 28 00:01:15,380 --> 00:01:13,020 of 1 to 10 as visual spectacles says 29 00:01:16,700 --> 00:01:15,390 NASA's leading eclipse expert Fred espa 30 00:01:20,120 --> 00:01:16,710 neck of the Goddard Space Flight Center 31 00:01:23,240 --> 00:01:20,130 if a partial eclipse is a 5 then an 32 00:01:24,800 --> 00:01:23,250 annular eclipse is at nine this event 33 00:01:27,649 --> 00:01:24,810 should not be confused with the total 34 00:01:29,510 --> 00:01:27,659 eclipse in a total eclipse the moon 35 00:01:31,730 --> 00:01:29,520 covers the entire surface of the Sun 36 00:01:33,499 --> 00:01:31,740 bringing an eerie Twilight to observers 37 00:01:36,530 --> 00:01:33,509 in the path of totality and revealing 38 00:01:39,050 --> 00:01:36,540 the sun's ghostly Corona on that scale 39 00:01:41,539 --> 00:01:39,060 of one to ten he adds a total eclipse is 40 00:01:43,550 --> 00:01:41,549 a million it's completely off the charts 41 00:01:46,760 --> 00:01:43,560 compared to any other astronomical event 42 00:01:49,850 --> 00:01:46,770 the next total eclipse in the USA is in 43 00:01:52,789 --> 00:01:49,860 the year 2017 until then may twentieth 44 00:01:54,679 --> 00:01:52,799 of this year we'll have to do annular 45 00:01:57,859 --> 00:01:54,689 eclipses have a special charm all their 46 00:02:00,499 --> 00:01:57,869 own during an annular eclipse sunbeams 47 00:02:02,270 --> 00:02:00,509 turn into little rings of light the best 48 00:02:04,550 --> 00:02:02,280 place to see this is on the Sun dappled 49 00:02:06,280 --> 00:02:04,560 ground beneath the leafy tree hundreds 50 00:02:08,719 --> 00:02:06,290 of circular shadows can be found there 51 00:02:10,430 --> 00:02:08,729 you can also make a handy solar 52 00:02:12,949 --> 00:02:10,440 projector by Criss crossing your fingers 53 00:02:13,460 --> 00:02:12,959 waffle style rays of light beaming 54 00:02:14,930 --> 00:02:13,470 through the 55 00:02:17,840 --> 00:02:14,940 apps will have the same shape as the 56 00:02:19,790 --> 00:02:17,850 Eclipse son be careful when looking 57 00:02:22,310 --> 00:02:19,800 directly at the Eclipse son cautions s 58 00:02:25,100 --> 00:02:22,320 panic the ring of sunlight during annual 59 00:02:26,660 --> 00:02:25,110 arity is blindingly bright even though 60 00:02:28,820 --> 00:02:26,670 as much as ninety-four percent of the 61 00:02:30,950 --> 00:02:28,830 sun's disk will be covered you still 62 00:02:33,530 --> 00:02:30,960 need to use a solar filter or some type 63 00:02:35,960 --> 00:02:33,540 of projection technique a number 14 64 00:02:37,400 --> 00:02:35,970 welder's glass is a good choice there 65 00:02:40,340 --> 00:02:37,410 are also many commercially available 66 00:02:42,140 --> 00:02:40,350 solar filters one of the unique things 67 00:02:44,420 --> 00:02:42,150 about this eclipse for watches in the 68 00:02:46,820 --> 00:02:44,430 USA is that the Sun will still be in 69 00:02:47,840 --> 00:02:46,830 deep partial eclipse at sunset making 70 00:02:50,660 --> 00:02:47,850 for some great photographic 71 00:02:52,940 --> 00:02:50,670 opportunities he continues in western 72 00:02:55,699 --> 00:02:52,950 Texas around Lubbock the Sun actually 73 00:02:57,400 --> 00:02:55,709 sets during the annular phase a swollen 74 00:03:00,110 --> 00:02:57,410 red Sun with a black hole in the middle 75 00:03:02,900 --> 00:03:00,120 maybe nine out of ten isn't so bad after 76 00:03:05,750 --> 00:03:02,910 all for more news about strangely shaped