1 00:00:14,570 --> 00:00:10,810 your guide to constellations deep-sky 2 00:00:36,050 --> 00:00:14,580 objects planets and events tonight's sky 3 00:00:44,510 --> 00:00:39,470 after sunset Mars and Saturn dipped 4 00:00:47,540 --> 00:00:44,520 toward the western horizon watch Saturn 5 00:01:00,280 --> 00:00:47,550 dance ever closer to Mars as the month 6 00:01:05,900 --> 00:01:03,200 on the evening of August thirty-first 7 00:01:09,500 --> 00:01:05,910 look for a lovely triple conjunction as 8 00:01:27,910 --> 00:01:09,510 Mars Saturn and the crescent moon share 9 00:01:33,020 --> 00:01:30,920 stargazing on a hot August night reveals 10 00:01:41,450 --> 00:01:33,030 a multitude of wonders in the summer 11 00:01:44,780 --> 00:01:41,460 night sky Lyra the small harp lies high 12 00:01:47,270 --> 00:01:44,790 in the late evening sky its main star is 13 00:01:50,990 --> 00:01:47,280 the great Vega one of the brightest in 14 00:01:53,450 --> 00:01:51,000 the sky look for lehre by locating Vega 15 00:01:57,200 --> 00:01:53,460 and then the parallelogram of stars 16 00:02:00,139 --> 00:01:57,210 nearby epsilon lorae the bright star 17 00:02:02,990 --> 00:02:00,149 near Vega is actually a wonderful 18 00:02:10,029 --> 00:02:03,000 quadruple star system known as the 19 00:02:16,729 --> 00:02:13,490 in the parallelogram of lira lies the 20 00:02:19,610 --> 00:02:16,739 dramatic ring nebula it is an expanding 21 00:02:33,000 --> 00:02:19,620 shell of glowing gas expelled by the 22 00:02:39,589 --> 00:02:36,380 the great constellation Cygnus the Swan 23 00:02:42,539 --> 00:02:39,599 flies high through the August night 24 00:02:45,020 --> 00:02:42,549 using bright Vega as your guide star 25 00:02:48,000 --> 00:02:45,030 look for the cross just to the east 26 00:02:53,520 --> 00:02:48,010 Cygnus is also known as the northern 27 00:02:56,640 --> 00:02:53,530 cross Albireo at the head of the Swan is 28 00:02:59,220 --> 00:02:56,650 a showpiece for small telescopes this 29 00:03:01,770 --> 00:02:59,230 spectacular pair of stars features 30 00:03:08,009 --> 00:03:01,780 contrasting colors of sapphire and 31 00:03:11,520 --> 00:03:08,019 golden topaz Deneb the Swans tail is a 32 00:03:14,430 --> 00:03:11,530 supergiant star if Deneb replaced the 33 00:03:18,140 --> 00:03:14,440 Sun in the center of our solar system it 34 00:03:21,930 --> 00:03:18,150 would engulf Mercury and Venus on a 35 00:03:24,660 --> 00:03:21,940 clear night hazy patches of nebulae can 36 00:03:29,760 --> 00:03:24,670 be seen by casually panning across the 37 00:03:35,300 --> 00:03:32,940 the most prominent is the North American 38 00:03:38,430 --> 00:03:35,310 nebula an area of gas and dust 39 00:03:45,880 --> 00:03:38,440 illuminated by the nearby brilliant star 40 00:03:56,220 --> 00:03:49,150 cygnus also hosts several clusters of 41 00:03:59,050 --> 00:03:56,230 stars the easiest to find RM 29 and m39 42 00:04:01,570 --> 00:03:59,060 m29 is found near the center of the 43 00:04:06,270 --> 00:04:01,580 northern cross when viewed in a small 44 00:04:10,720 --> 00:04:06,280 telescope it resembles a small square 45 00:04:13,870 --> 00:04:10,730 best seen in binoculars m39 is a loosely 46 00:04:20,780 --> 00:04:13,880 bound cluster of about thirty stars just 47 00:04:26,690 --> 00:04:23,560 just south of Cygnus lies the small 48 00:04:29,020 --> 00:04:26,700 constellation vulpecula the little fox 49 00:04:38,050 --> 00:04:29,030 first charted by polish astronomer 50 00:04:43,550 --> 00:04:40,910 vulpecula hosts the dumbbell nebula 51 00:04:47,090 --> 00:04:43,560 which can be seen as a faint smudge in 52 00:05:11,510 --> 00:04:47,100 binoculars a small telescope reveals its 53 00:05:18,980 --> 00:05:14,490 aquila the eagle was known to the 54 00:05:22,230 --> 00:05:18,990 ancient Greeks as the great bird of Zeus 55 00:05:38,999 --> 00:05:22,240 Altair the brightest star in Aquila is 56 00:05:45,659 --> 00:05:41,760 the bright stars of the summer night sky 57 00:05:50,969 --> 00:05:45,669 Vega Altair and Deneb make up the summer 58 00:05:53,089 --> 00:05:50,979 triangle use binoculars to look for the 59 00:06:05,000 --> 00:05:53,099 coat hanger located halfway between 60 00:06:10,740 --> 00:06:07,800 this remarkable little group of stars 61 00:06:26,570 --> 00:06:10,750 forms a familiar pattern from our point 62 00:06:31,490 --> 00:06:29,270 during the middle of the month Venus and 63 00:06:33,920 --> 00:06:31,500 Jupiter hovered together above the 64 00:06:40,810 --> 00:06:33,930 eastern horizon gracing the early 65 00:06:56,740 --> 00:06:43,960 a telescope will provide a better view 66 00:07:02,000 --> 00:06:59,420 Venus and Jupiter experienced an 67 00:07:04,460 --> 00:07:02,010 extremely close conjunction on August 68 00:07:23,150 --> 00:07:04,470 eighteenth look for the tight pair in 69 00:07:28,880 --> 00:07:26,390 the perseid meteor shower is an always 70 00:07:33,340 --> 00:07:28,890 anticipated feature of the August night 71 00:07:40,400 --> 00:07:37,340 however this year's show may be impeded 72 00:07:42,680 --> 00:07:40,410 by the bright moon look for meteors 73 00:07:45,980 --> 00:07:42,690 during the early morning hours of August 74 00:07:48,710 --> 00:07:45,990 twelfth and thirteenth these streaks of 75 00:07:51,590 --> 00:07:48,720 light are tiny bits of a comet burning 76 00:07:53,870 --> 00:07:51,600 up as they enter Earth's atmosphere the 77 00:07:56,540 --> 00:07:53,880 cometary debris trail through which 78 00:07:59,390 --> 00:07:56,550 Earth passes once a year was left behind 79 00:08:06,590 --> 00:07:59,400 by comet swift-tuttle during its many 80 00:08:12,760 --> 00:08:06,600 visits to the inner solar system the