1 00:00:14,419 --> 00:00:10,549 your guide to constellations deep-sky 2 00:00:38,270 --> 00:00:14,429 objects planets and events tonight's sky 3 00:00:45,049 --> 00:00:41,420 Venus and Mars pair up in the western 4 00:00:51,200 --> 00:00:45,059 sky after sunset on these cold February 5 00:01:08,820 --> 00:00:54,570 use a telescope to get a better look at 6 00:01:24,330 --> 00:01:12,100 Mars and Venus will form a tight trio 7 00:01:39,820 --> 00:01:30,280 as the sky darkens look for Jupiter 8 00:01:45,100 --> 00:01:42,640 the giant planet will remain a great 9 00:01:59,550 --> 00:01:45,110 target for telescopes throughout the 10 00:02:05,590 --> 00:02:02,680 the winter night sky filled with 11 00:02:14,940 --> 00:02:05,600 brilliant stars presents one of the best 12 00:02:24,630 --> 00:02:17,760 orion the great hunter of Greek 13 00:02:27,000 --> 00:02:24,640 mythology dominates the winter sky this 14 00:02:30,449 --> 00:02:27,010 constellation is among the easiest to 15 00:02:35,490 --> 00:02:30,459 recognize it is full of young stars 16 00:02:38,520 --> 00:02:35,500 dying stars and many nebulae Betelgeuse 17 00:02:42,750 --> 00:02:38,530 one of Orion's shoulders is a red 18 00:02:45,930 --> 00:02:42,760 supergiant star about 650 times bigger 19 00:02:51,350 --> 00:02:45,940 than the Sun it shines with the 20 00:02:57,030 --> 00:02:54,319 Betelgeuse is near the end of its life 21 00:02:59,759 --> 00:02:57,040 with the fuel at the Stars core 22 00:03:02,729 --> 00:02:59,769 practically depleted the core has 23 00:03:08,600 --> 00:03:02,739 contracted and heated pausing the outer 24 00:03:15,900 --> 00:03:12,539 Rigel one of Orion's knees is a triple 25 00:03:20,460 --> 00:03:15,910 star system made up of two smaller stars 26 00:03:23,870 --> 00:03:20,470 orbiting a blue supergiant Rigel blue 27 00:03:27,629 --> 00:03:23,880 supergiant star has a short life span 28 00:03:30,449 --> 00:03:27,639 blue supergiant stars are much hotter 29 00:03:36,629 --> 00:03:30,459 than our Sun and use up their fuel 30 00:03:40,500 --> 00:03:36,639 quickly Orion's belt is easy to spot it 31 00:03:46,050 --> 00:03:40,510 is made up of three stars Alma tack on 32 00:03:48,990 --> 00:03:46,060 the lamb and Mintaka from the left side 33 00:03:53,009 --> 00:03:49,000 of Orion's belt look down to the great 34 00:03:55,259 --> 00:03:53,019 Orion Nebula although barely visible to 35 00:03:58,370 --> 00:03:55,269 the naked eye it is the brightest 36 00:04:02,789 --> 00:03:58,380 diffuse gas cloud in the night sky 37 00:04:05,460 --> 00:04:02,799 nebula is Latin for cloud a small 38 00:04:12,560 --> 00:04:05,470 telescope unveils the details and 39 00:04:19,920 --> 00:04:16,080 embedded inside the Orion Nebula is the 40 00:04:22,290 --> 00:04:19,930 trapezium a group of hot young stars so 41 00:04:40,770 --> 00:04:22,300 brilliant they caused the surrounding 42 00:04:46,410 --> 00:04:44,220 Canis Major the Great dog is the 43 00:04:51,150 --> 00:04:46,420 faithful companion who follows in 44 00:04:53,940 --> 00:04:51,160 Orion's footsteps Canis Major is 45 00:04:57,840 --> 00:04:53,950 dominated by the most brilliant star in 46 00:05:00,960 --> 00:04:57,850 the night sky serious serious is 47 00:05:03,810 --> 00:05:00,970 actually a double system containing a 48 00:05:08,040 --> 00:05:03,820 bright star and a much smaller and 49 00:05:11,129 --> 00:05:08,050 fainter companion it is a mere 8.6 50 00:05:13,920 --> 00:05:11,139 light-years away scanning with 51 00:05:17,330 --> 00:05:13,930 binoculars just below serious will 52 00:05:22,100 --> 00:05:17,340 reveal a lovely cluster of stars called 53 00:05:26,670 --> 00:05:22,110 m41 it contains about 100 stars 54 00:05:30,300 --> 00:05:26,680 including several red giants stars in 55 00:05:49,689 --> 00:05:30,310 clusters like m41 were born together and 56 00:05:55,430 --> 00:05:52,850 saturn rises well after midnight and 57 00:06:12,920 --> 00:05:55,440 climbs higher during the pre-dawn hours 58 00:06:20,219 --> 00:06:16,740 the night sky is always a celestial