1 00:00:01,439 --> 00:00:20,060 the do 2 00:00:20,060 --> 00:00:24,160 astronomy day and more hey there stargazers 3 00:00:24,160 --> 00:00:27,290 I'm Deanery guess astronomer for the Cincinnati Observatory 4 00:00:27,290 --> 00:00:30,890 and I'm james oberg director the key cassava plop planetarium in Gainesville 5 00:00:30,890 --> 00:00:31,480 Florida 6 00:00:31,480 --> 00:00:35,640 mark Saturday May 10th on your calendar as national astronomy day 7 00:00:35,640 --> 00:00:38,940 a day when most astronomy clubs planetariums 8 00:00:38,940 --> 00:00:42,750 and Science Center's all across the country will be celebrating stargazing 9 00:00:42,750 --> 00:00:45,840 with all kinds of things astronomical including 10 00:00:45,840 --> 00:00:50,220 working through telescopes and usually free of charge since 1973 11 00:00:50,220 --> 00:00:53,900 national astronomy day has been observed in April or May 12 00:00:53,900 --> 00:00:57,330 on the Saturday closest to the first quarter moon which will be 13 00:00:57,330 --> 00:01:00,800 on the six this year now why do they do that well 14 00:01:00,800 --> 00:01:03,949 first quarter moons are always high in the sky and 15 00:01:03,949 --> 00:01:07,250 easily visible in early evening and they're much more 16 00:01:07,250 --> 00:01:10,330 interesting to observe through telescopes for astronomy day 17 00:01:10,330 --> 00:01:13,970 and they don't break in the sky so much that other things like planets are 18 00:01:13,970 --> 00:01:14,760 washed out 19 00:01:14,760 --> 00:01:17,880 so Saturday close to a first-quarter moon in May 20 00:01:17,880 --> 00:01:22,190 when the weather is turning nice just fits the bill soak our local planetarium 21 00:01:22,190 --> 00:01:26,410 science center or astronomy club to see what they're doing for astronomy day 22 00:01:26,410 --> 00:01:30,880 and check our website stargazers online .org for more info 23 00:01:30,880 --> 00:01:34,440 and as they have for many years astronomy magazine 24 00:01:34,440 --> 00:01:38,789 and Celestron telescopes are once again sponsoring astronomy day activities 25 00:01:38,789 --> 00:01:43,110 all across the country with Celestron providing telescopes as door prizes 26 00:01:43,110 --> 00:01:46,720 and a grand prize winner will be chosen from all across the country 27 00:01:46,720 --> 00:01:50,259 for special telescope price now just coincidentally 28 00:01:50,259 --> 00:01:54,140 there are three planets available for viewing just after sunset 29 00:01:54,140 --> 00:01:57,360 end the moon will help you find them well let's show it 30 00:01:57,360 --> 00:02:02,770 okay we've got our sky set up for May 3rd about it hour after sunset 31 00:02:02,770 --> 00:02:05,920 facing west we'll see the bright planet Jupiter 32 00:02:05,920 --> 00:02:09,800 which has been providing a spectacular sky show for the past few months 33 00:02:09,800 --> 00:02:14,120 just above jupiter it will find Castor and Pollux the break twin stars in 34 00:02:14,120 --> 00:02:14,690 Gemini 35 00:02:14,690 --> 00:02:18,579 and below duper a waxing five-day-old crescent moon 36 00:02:18,579 --> 00:02:23,420 then on Sunday the 4th a slightly fatter crescent moon will be just to the left 37 00:02:23,420 --> 00:02:27,000 duper once again the third and the fourth 38 00:02:27,000 --> 00:02:30,819 if you keep on watching jupiter each night over the next two months 39 00:02:30,819 --> 00:02:34,379 you'll see something really unusual let's look at jupiter 40 00:02:34,379 --> 00:02:38,819 Ancaster and Pollux once more they make a nice right triangle 41 00:02:38,819 --> 00:02:43,430 don't they but over the next two months Jupiter will rapidly move eastward in 42 00:02:43,430 --> 00:02:43,989 the sky 43 00:02:43,989 --> 00:02:48,639 each night and by the end of June as jupiter is disappearing in the glow of 44 00:02:48,639 --> 00:02:52,849 evening twilight caster pollack's n Jupiter will be 45 00:02:52,849 --> 00:02:56,639 almost in a straight line once again right triangle 46 00:02:56,639 --> 00:03:02,010 early in May straight line at the end of June let's get back to the moon in the 47 00:03:02,010 --> 00:03:02,859 other planets 48 00:03:02,859 --> 00:03:07,109 if you watch every night next week you'll see the moon move farther to the 49 00:03:07,109 --> 00:03:07,560 east 50 00:03:07,560 --> 00:03:11,260 each evening and on Saturday May 10 astronomy day 51 00:03:11,260 --> 00:03:16,469 a fairly pudgy eleven-day old moon will be about six degrees west of mars 52 00:03:16,469 --> 00:03:20,189 and the next night May 11 the moon will be East mars 53 00:03:20,189 --> 00:03:24,769 and if you don't have a telescope most astronomy clubs planetariums and science 54 00:03:24,769 --> 00:03:26,590 centers will be showing you Jupiter 55 00:03:26,590 --> 00:03:30,450 and Mars and the moon through their telescopes on astronomy day 56 00:03:30,450 --> 00:03:34,299 now we said there were three planets that the moon will be showing you 57 00:03:34,299 --> 00:03:37,749 what's turned the southeast after enjoying mars 58 00:03:37,749 --> 00:03:41,099 and the ringed planet Saturn will be climbing higher in the sky 59 00:03:41,099 --> 00:03:45,090 Saturn is brighter than it was at this time last year 60 00:03:45,090 --> 00:03:49,019 in fact it's brighter than it's been for the past seven years 61 00:03:49,019 --> 00:03:54,349 but why let's start by remembering the big difference between the stars and 62 00:03:54,349 --> 00:03:55,150 planets 63 00:03:55,150 --> 00:03:59,999 stars produce their own light or what's up while we see planets only because 64 00:03:59,999 --> 00:04:01,230 they reflect the light 65 00:04:01,230 --> 00:04:06,469 only one star the Sun planets like senator really dinky when it comes to 66 00:04:06,469 --> 00:04:07,849 showing lighten the sky 67 00:04:07,849 --> 00:04:12,019 but since they're really close some other planets can appear to be really 68 00:04:12,019 --> 00:04:12,430 bright 69 00:04:12,430 --> 00:04:17,560 now Saturn's rings are big part of the reflecting surface that sends light from 70 00:04:17,560 --> 00:04:18,260 the Sun 71 00:04:18,260 --> 00:04:23,520 backed our way to the air the Rings do not look the same all the time 72 00:04:23,520 --> 00:04:26,570 in 2009 Saturn's rings were edge on to us 73 00:04:26,570 --> 00:04:29,620 and reflected very little and for a short time 74 00:04:29,620 --> 00:04:32,889 no white but that was over four years ago 75 00:04:32,889 --> 00:04:36,000 we'll be talking more about the change in brightness a satyr and 76 00:04:36,000 --> 00:04:39,240 upcoming episode stargazers at any rate 77 00:04:39,240 --> 00:04:42,740 enjoy all the free events and free telescopic doing on 78 00:04:42,740 --> 00:04:46,680 national astronomy day it'll be a great outing for the whole fam 79 00:04:46,680 --> 00:04:52,950 keep looking up 80 00:04:52,950 --> 00:04:57,699 s me 81 00:04:57,699 --> 00:05:02,699 T