1 00:00:04,470 --> 00:00:02,629 [Music] 2 00:00:06,309 --> 00:00:04,480 what's up for march 3 00:00:08,390 --> 00:00:06,319 meet the morning planets 4 00:00:11,830 --> 00:00:08,400 the nearest star cluster 5 00:00:14,470 --> 00:00:11,840 and some do-it-yourself exoplanets 6 00:00:16,470 --> 00:00:14,480 saturn joins venus and mars this month 7 00:00:19,109 --> 00:00:16,480 in the morning sky beginning around 8 00:00:21,269 --> 00:00:19,119 march 18th or 19th early risers may 9 00:00:23,830 --> 00:00:21,279 notice saturn steadily moving toward 10 00:00:26,150 --> 00:00:23,840 mars and venus each day to form a trio 11 00:00:27,910 --> 00:00:26,160 low in the east before sunrise the 12 00:00:30,310 --> 00:00:27,920 crescent moon joins the crowd on the 13 00:00:32,310 --> 00:00:30,320 27th and 28th 14 00:00:33,990 --> 00:00:32,320 saturn and mars are headed toward a 15 00:00:36,069 --> 00:00:34,000 super close meeting at the start of 16 00:00:38,069 --> 00:00:36,079 april more about that in next month's 17 00:00:40,150 --> 00:00:38,079 video 18 00:00:41,990 --> 00:00:40,160 look high in the southwest on march 19 00:00:45,190 --> 00:00:42,000 evenings and you'll find the tall 20 00:00:47,029 --> 00:00:45,200 y-shaped constellation taurus the bull 21 00:00:49,910 --> 00:00:47,039 and at the center of taurus forming the 22 00:00:52,150 --> 00:00:49,920 bull's face is a group of stars known as 23 00:00:54,229 --> 00:00:52,160 the hyades star cluster 24 00:00:56,229 --> 00:00:54,239 it's the closest open star cluster to 25 00:00:57,270 --> 00:00:56,239 our solar system containing hundreds of 26 00:01:01,349 --> 00:00:57,280 stars 27 00:01:03,189 --> 00:01:01,359 that are close together in space and 28 00:01:04,229 --> 00:01:03,199 loosely bound together by their mutual 29 00:01:06,070 --> 00:01:04,239 gravity 30 00:01:08,230 --> 00:01:06,080 these are stars that formed together 31 00:01:09,670 --> 00:01:08,240 around the same time from the same cloud 32 00:01:12,149 --> 00:01:09,680 of dust and gas 33 00:01:14,789 --> 00:01:12,159 over time they blow away that leftover 34 00:01:16,550 --> 00:01:14,799 nebula material and drift apart 35 00:01:19,109 --> 00:01:16,560 because of this and they're open or 36 00:01:20,310 --> 00:01:19,119 diffuse structures they're called open 37 00:01:22,390 --> 00:01:20,320 clusters 38 00:01:24,310 --> 00:01:22,400 our own sun formed in a cluster like 39 00:01:27,510 --> 00:01:24,320 this and studying these structures helps 40 00:01:29,429 --> 00:01:27,520 us understand how stars form and evolve 41 00:01:32,630 --> 00:01:29,439 another well-known open cluster is the 42 00:01:34,550 --> 00:01:32,640 pleiades which is also located in taurus 43 00:01:36,950 --> 00:01:34,560 the hyades and the pleiades are actually 44 00:01:38,950 --> 00:01:36,960 about the same size at about 15 or so 45 00:01:40,950 --> 00:01:38,960 light years across but the pleiades is 46 00:01:42,870 --> 00:01:40,960 about three times farther away so it 47 00:01:44,469 --> 00:01:42,880 appears more compact 48 00:01:46,950 --> 00:01:44,479 you don't need a telescope to find the 49 00:01:48,789 --> 00:01:46,960 hyades look for this v-shaped grouping 50 00:01:51,830 --> 00:01:48,799 of stars in taurus 51 00:01:53,910 --> 00:01:51,840 use the stars of orion's belt as a handy 52 00:01:55,270 --> 00:01:53,920 pointer leading you to bright orange 53 00:01:59,510 --> 00:01:55,280 aldebaran 54 00:02:01,350 --> 00:01:59,520 star cluster it's located halfway to the 55 00:02:02,550 --> 00:02:01,360 hyades and just happens to appear in the 56 00:02:04,709 --> 00:02:02,560 foreground 57 00:02:06,630 --> 00:02:04,719 so check out the hyades in march where 58 00:02:09,109 --> 00:02:06,640 you'll see a handful of stars with the 59 00:02:11,430 --> 00:02:09,119 unaided eye and more than 100 with 60 00:02:14,309 --> 00:02:11,440 binoculars 61 00:02:16,150 --> 00:02:14,319 march skies contain several easy-to-find 62 00:02:17,750 --> 00:02:16,160 bright stars that are known to have 63 00:02:18,470 --> 00:02:17,760 planets of their own orbiting around 64 00:02:21,030 --> 00:02:18,480 them 65 00:02:22,150 --> 00:02:21,040 locate these distant suns for yourself 66 00:02:25,430 --> 00:02:22,160 and you'll know you're appearing 67 00:02:28,309 --> 00:02:25,440 directly at another planetary system 68 00:02:29,750 --> 00:02:28,319 first is epsilon taurai the right eye of 69 00:02:32,309 --> 00:02:29,760 taurus the bull 70 00:02:34,229 --> 00:02:32,319 this orange dwarf star has a gas giant 71 00:02:35,589 --> 00:02:34,239 planet around eight times the mass of 72 00:02:38,630 --> 00:02:35,599 jupiter 73 00:02:40,150 --> 00:02:38,640 next is seven canis majoris this is the 74 00:02:41,990 --> 00:02:40,160 star at the heart of the dog 75 00:02:43,750 --> 00:02:42,000 constellation that contains blazing 76 00:02:46,150 --> 00:02:43,760 bright sirius 77 00:02:48,070 --> 00:02:46,160 this star is known to have two planets a 78 00:02:49,830 --> 00:02:48,080 gas giant nearly twice the mass of 79 00:02:52,309 --> 00:02:49,840 jupiter and another just a little 80 00:02:54,790 --> 00:02:52,319 smaller than jupiter moving on we find 81 00:02:56,949 --> 00:02:54,800 tau geminorum the star at the heart of 82 00:02:58,149 --> 00:02:56,959 castor northernmost of the twins in 83 00:03:00,550 --> 00:02:58,159 gemini 84 00:03:03,110 --> 00:03:00,560 tau geminorum has a huge gas giant 85 00:03:05,110 --> 00:03:03,120 planet 20 times the mass of jupiter in 86 00:03:06,149 --> 00:03:05,120 an orbit only slightly larger than that 87 00:03:08,309 --> 00:03:06,159 of earth 88 00:03:10,949 --> 00:03:08,319 and finally wheeling around to the north 89 00:03:13,509 --> 00:03:10,959 is beta ursa minorus the brightest star 90 00:03:15,750 --> 00:03:13,519 in the bowl of the little dipper 91 00:03:17,350 --> 00:03:15,760 this star has a six jupiter mass planet 92 00:03:19,350 --> 00:03:17,360 in orbit around it 93 00:03:20,710 --> 00:03:19,360 researchers expect that most stars have 94 00:03:22,949 --> 00:03:20,720 a family of planets orbiting them 95 00:03:25,190 --> 00:03:22,959 because forming planets is a natural 96 00:03:27,110 --> 00:03:25,200 part of forming stars 97 00:03:30,949 --> 00:03:27,120 and now you know how to find a few of 98 00:03:32,390 --> 00:03:30,959 them yourself no telescope required 99 00:03:34,949 --> 00:03:32,400 here are the phases of the moon for 100 00:03:38,710 --> 00:03:36,789 stay up to date with all of nasa's 101 00:03:41,589 --> 00:03:38,720 missions to explore the solar system and 102 00:03:43,430 --> 00:03:41,599 beyond at nasa.gov i'm preston dykes