1 00:00:04,710 --> 00:00:02,710 [Music] 2 00:00:07,269 --> 00:00:04,720 what's up for may 3 00:00:09,110 --> 00:00:07,279 the planets of dusk and dawn 4 00:00:11,990 --> 00:00:09,120 a lunar eclipse 5 00:00:14,390 --> 00:00:12,000 and the coma star cluster 6 00:00:16,950 --> 00:00:14,400 may begins and ends with a couple of 7 00:00:19,590 --> 00:00:16,960 great planet spotting opportunities 8 00:00:21,670 --> 00:00:19,600 on may 2nd look to the west about 45 9 00:00:23,910 --> 00:00:21,680 minutes after sunset to find mercury 10 00:00:26,710 --> 00:00:23,920 about 10 degrees off the horizon 11 00:00:28,310 --> 00:00:26,720 accompanied by a slim crescent moon 12 00:00:31,509 --> 00:00:28,320 just to the south of the moon is 13 00:00:33,270 --> 00:00:31,519 brilliant red giant star aldebaran which 14 00:00:35,590 --> 00:00:33,280 should be roughly the same brightness as 15 00:00:37,590 --> 00:00:35,600 mercury and by the way this is the only 16 00:00:40,069 --> 00:00:37,600 chance to spot a naked eye planet in the 17 00:00:42,069 --> 00:00:40,079 early evening until august 18 00:00:44,549 --> 00:00:42,079 then in the last week of may you can 19 00:00:46,709 --> 00:00:44,559 watch each morning as jupiter and mars 20 00:00:47,750 --> 00:00:46,719 get increasingly close in the pre-dawn 21 00:00:50,069 --> 00:00:47,760 sky 22 00:00:51,910 --> 00:00:50,079 their morning meetup culminates in a 23 00:00:54,069 --> 00:00:51,920 close conjunction that you can watch on 24 00:00:55,990 --> 00:00:54,079 the 28th through the 30th where they'll 25 00:00:58,069 --> 00:00:56,000 be separated by barely the width of the 26 00:00:59,750 --> 00:00:58,079 full moon should look incredible with 27 00:01:02,790 --> 00:00:59,760 binoculars where you can also see 28 00:01:04,630 --> 00:01:02,800 jupiter's largest moons 29 00:01:06,469 --> 00:01:04,640 sky watchers in the western hemisphere 30 00:01:08,310 --> 00:01:06,479 can look forward to a total lunar 31 00:01:10,149 --> 00:01:08,320 eclipse in mid-may 32 00:01:12,789 --> 00:01:10,159 the event will be visible across the 33 00:01:14,390 --> 00:01:12,799 americas europe and africa basically 34 00:01:16,789 --> 00:01:14,400 anywhere the moon is visible above the 35 00:01:19,670 --> 00:01:16,799 horizon at the time the visible part of 36 00:01:22,630 --> 00:01:19,680 the eclipse begins about 10 30 pm us 37 00:01:24,469 --> 00:01:22,640 eastern time on may 15th with totality 38 00:01:27,429 --> 00:01:24,479 starting an hour later and lasting for 39 00:01:29,109 --> 00:01:27,439 about an hour and a half 40 00:01:30,870 --> 00:01:29,119 those in the eastern u.s will see the 41 00:01:32,390 --> 00:01:30,880 eclipse start with the moon well above 42 00:01:34,149 --> 00:01:32,400 the horizon 43 00:01:36,149 --> 00:01:34,159 for the central u.s the eclipse starts 44 00:01:39,190 --> 00:01:36,159 about an hour and a half after dark with 45 00:01:41,030 --> 00:01:39,200 the moon relatively low in the sky 46 00:01:43,510 --> 00:01:41,040 on the west coast of the u.s the moon 47 00:01:45,590 --> 00:01:43,520 rises with totality beginning or already 48 00:01:47,429 --> 00:01:45,600 underway so you'll want to find a clear 49 00:01:48,389 --> 00:01:47,439 view toward the southeast viewing from 50 00:01:50,230 --> 00:01:48,399 there 51 00:01:52,550 --> 00:01:50,240 now lunar eclipses are the ones that are 52 00:01:54,469 --> 00:01:52,560 safe to look at directly with your eyes 53 00:01:55,910 --> 00:01:54,479 or binoculars or a telescope unlike 54 00:01:58,149 --> 00:01:55,920 solar eclipses 55 00:02:00,550 --> 00:01:58,159 the moon takes on a dim reddish hue 56 00:02:02,230 --> 00:02:00,560 during the period of totality even 57 00:02:04,310 --> 00:02:02,240 though the moon is fully immersed in 58 00:02:06,230 --> 00:02:04,320 earth's shadow at that time red 59 00:02:07,749 --> 00:02:06,240 wavelengths of sunlight filter through 60 00:02:09,109 --> 00:02:07,759 earth's atmosphere and fall onto the 61 00:02:10,869 --> 00:02:09,119 moon's surface 62 00:02:13,270 --> 00:02:10,879 one way to think of this is that a total 63 00:02:15,750 --> 00:02:13,280 lunar eclipse shows us a projection of 64 00:02:18,070 --> 00:02:15,760 all the sunrises and sunsets happening 65 00:02:19,830 --> 00:02:18,080 on the planet at that moment 66 00:02:22,470 --> 00:02:19,840 so check your local details for this 67 00:02:27,350 --> 00:02:22,480 eclipse and find lots more eclipse info 68 00:02:33,190 --> 00:02:29,589 finally in may a really nice target for 69 00:02:35,910 --> 00:02:33,200 binoculars the coma star cluster 70 00:02:38,229 --> 00:02:35,920 this loose open star cluster displays 40 71 00:02:41,430 --> 00:02:38,239 or 50 stars spread over a region of sky 72 00:02:43,110 --> 00:02:41,440 about three finger widths wide 73 00:02:45,910 --> 00:02:43,120 the brightest stars in the cluster form 74 00:02:47,830 --> 00:02:45,920 a distinctive y shape as seen here 75 00:02:50,150 --> 00:02:47,840 the coma star cluster is located about 76 00:02:52,630 --> 00:02:50,160 300 light years away making it the 77 00:02:55,509 --> 00:02:52,640 second closest open cluster to earth 78 00:02:57,589 --> 00:02:55,519 after the hyades cluster in taurus 79 00:03:00,309 --> 00:02:57,599 to find the coma star cluster look 80 00:03:02,390 --> 00:03:00,319 southward for the constellation leo 81 00:03:04,710 --> 00:03:02,400 it can be easiest to start from the big 82 00:03:06,949 --> 00:03:04,720 dipper toward the north and use the two 83 00:03:08,710 --> 00:03:06,959 pointer stars on the end which always 84 00:03:11,110 --> 00:03:08,720 point you toward leo 85 00:03:13,910 --> 00:03:11,120 once you've identified leo the coma star 86 00:03:15,830 --> 00:03:13,920 cluster is about 15 degrees to the east 87 00:03:18,710 --> 00:03:15,840 of the triangle of stars representing 88 00:03:21,110 --> 00:03:18,720 the lion's hindquarters it's relatively 89 00:03:23,350 --> 00:03:21,120 easy to find with binoculars even under 90 00:03:24,710 --> 00:03:23,360 light polluted urban skies as long as 91 00:03:26,550 --> 00:03:24,720 it's clear out 92 00:03:29,110 --> 00:03:26,560 so here's wishing you clear skies for 93 00:03:30,710 --> 00:03:29,120 finding the coma star cluster and any 94 00:03:33,509 --> 00:03:30,720 other wonders you discover in the night 95 00:03:37,509 --> 00:03:33,519 sky in may 96 00:03:41,350 --> 00:03:39,350 stay up to date with all of nasa's 97 00:03:43,990 --> 00:03:41,360 missions to explore the solar system and 98 00:03:45,670 --> 00:03:44,000 beyond at nasa.gov 99 00:03:47,670 --> 00:03:45,680 i'm preston dykes from nasa's jet