1 00:00:20,520 --> 00:00:24,224 DEAN: HEY THERE STAR GAZERS. 2 00:00:24,324 --> 00:00:27,360 I'M DEAN REGAS, ASTRONOMER FOR THE CINCINNATI OBSERVATORY. 3 00:00:27,460 --> 00:00:29,662 JAMES: AND I'M JAMES ALBURY, DIRECTOR OF THE KIKA 4 00:00:29,763 --> 00:00:32,665 SILVA PLA PLANETARIUM IN GAINESVILLE, FLORIDA. 5 00:00:32,766 --> 00:00:36,036 WE'RE HERE TO HELP YOU FIND YOUR WAY AROUND THE SKY TONIGHT. 6 00:00:36,136 --> 00:00:38,805 THE SUMMER TRIANGLE IS RIDING HIGH IN THE SKY THIS WEEK AND IF 7 00:00:38,905 --> 00:00:42,742 YOUVE WATCHED OUR SHOW OVER THE YEARS, YOU'LL KNOW THAT WE OFTEN TALK ABOUT TWO OF 8 00:00:42,842 --> 00:00:46,312 ITS CONSTELLATIONS; CYGNUS THE SWAN AND LYRA THE HARP. 9 00:00:46,413 --> 00:00:48,548 DEAN: BUT THERES A THIRD CONSTELLATION THAT 10 00:00:48,648 --> 00:00:52,452 WE HAVEN'T REALLY DISCUSSED IN DETAIL AND THATS AQUILA THE EAGLE. 11 00:00:52,552 --> 00:00:53,887 JAMES: THATS RIGHT, DEAN! 12 00:00:53,987 --> 00:00:57,190 SO THIS WEEK, WE'VE DECIDED TO SHOW AQUILA SOME LOVE 13 00:00:57,290 --> 00:01:00,527 AND INTRODUCE YOU TO THE CONSTELLATION THAT REPRESENTS ZEUS 14 00:01:00,627 --> 00:01:01,828 PET EAGLE. 15 00:01:01,928 --> 00:01:03,096 LETS SHOW YOU! 16 00:01:03,196 --> 00:01:06,132 JAMES: OK, WE HAVE OUR SKIES SET UP FOR AN HOUR AFTER 17 00:01:06,232 --> 00:01:08,435 SUNSET, FACING SOUTHEAST. 18 00:01:08,535 --> 00:01:11,504 LOOKING HIGH IN THE SKY, WE SEE THE SUMMER TRIANGLE. 19 00:01:11,604 --> 00:01:15,875 THE THREE BRIGHTEST STARS ARE VEGA, ALTAIR AND DENEB. 20 00:01:15,975 --> 00:01:19,813 WE'RE GOING TO FOCUS ON ALTAIR, BECAUSE THAT IS THE BRIGHTEST STAR IN THE CONSTELLATION 21 00:01:19,913 --> 00:01:21,081 AQUILA THE EAGLE. 22 00:01:21,181 --> 00:01:23,917 DEAN: AQUILA IS BEST KNOWN AS THE PET EAGLE BELONGING 23 00:01:24,017 --> 00:01:26,152 TO ZEUS, THE KING OF THE GREEK GODS. 24 00:01:26,252 --> 00:01:31,558 AQUILA HAD THE JOB OF HOLDING ZEUS LIGHTNING BOLTS, BUT HE WAS ALSO KNOWN FOR KIDNAPPING 25 00:01:31,658 --> 00:01:36,663 GANYMEDE AND BRINGING HIM TO MOUNT OLYMPUS TO BE ZEUS DIVINE DRINK SERVER. 26 00:01:36,763 --> 00:01:40,133 JAMES: THE BRIGHTEST STAR IN AQUILA IS ALTAIR. 27 00:01:40,233 --> 00:01:43,002 ALTAIR IS 17 LIGHT YEARS FROM EARTH AND IS ONE 28 00:01:43,103 --> 00:01:45,271 OF THE CLOSEST STARS VISIBLE TO THE NAKED EYE. 29 00:01:45,371 --> 00:01:47,707 DEAN: ALTAIR HAS THE RARE DISTINCTION OF BEING THE 30 00:01:47,807 --> 00:01:50,543 FASTEST ROTATING STAR IN OUR NEIGHBORHOOD. 31 00:01:50,643 --> 00:01:57,317 OUR SUN FOR EXAMPLE TAKES 25 DAYS TO SPIN ONCE, BUT ALTAIR SPINS ONCE IN ONLY 9 HOURS! 32 00:01:57,417 --> 00:02:02,021 THIS HAS RESULTED IN ALTAIR BEING SO DISTORED THAT IT RESEMBLES AN M&M. 33 00:02:02,122 --> 00:02:05,792 DEAN: THE SEMI-BRIGHT STAR ABOVE ALTAIR IS TARAZED. 34 00:02:05,892 --> 00:02:12,031 ITS AN ORANGE GIANT STAR 460 LIGHT YEARS FROM US AND OVER 2500 TIMES AS BRIGHT 35 00:02:12,132 --> 00:02:13,266 AS OUR SUN. 36 00:02:13,366 --> 00:02:16,970 JAMES: THE SEMI-BRIGHT STAR BELOW ALTAIR IS ALSHAIN 37 00:02:17,070 --> 00:02:20,573 ITS A BINARY STAR SYSTEM 45 LIGHT YEARS FROM EARTH. 38 00:02:20,673 --> 00:02:24,677 THE PRIMARY STAR, IS A YELLOW SUBGIANT ONLY 30% MORE MASSIVE 39 00:02:24,777 --> 00:02:27,147 THAN OUR SUN, AND THREE TIMES THE RADIUS. 40 00:02:27,247 --> 00:02:30,150 DEAN: THE SMALLER COMPANION STAR IS A RED DWARF 41 00:02:30,250 --> 00:02:35,188 ONLY A THIRD THE MASS OF THE SUN WITH ONLY 2% OUR SUNS LUMINOSITY. 42 00:02:35,288 --> 00:02:37,657 TALK ABOUT A TINY STAR! 43 00:02:37,757 --> 00:02:40,426 JAMES: YOU MIGHT BE SURPRISED TO KNOW THAT AQUILA 44 00:02:40,527 --> 00:02:45,298 THE EAGLE HAS 143 STARS THAT ASTRONOMERS CONSIDER NOTEWORTHY. 45 00:02:45,398 --> 00:02:49,202 HOWEVER, ONLY A HANDFUL OF THEM YOU CAN SEE FROM A LIGHT POLLUTED CITY. 46 00:02:49,302 --> 00:02:52,071 DEAN: AQUILA IS ALSO ONE OF THOSE CONSTELLATIONS 47 00:02:52,172 --> 00:02:55,141 WHERE THE BAYER DESIGNATION GETS A LITTLE WEIRD. 48 00:02:55,241 --> 00:03:00,046 DEVELOPED BY ASTRONOMER JOHANN BAYER, THE GREEK LETTER DESIGNATION FOR STARS MOST OF 49 00:03:00,146 --> 00:03:03,016 THE TIME WAS BASED ON THE STARS BRIGHTNESS; 50 00:03:03,116 --> 00:03:05,952 ALPHA BEING THE BRIGHTEST, BETA THE SECOND BRIGHTEST 51 00:03:06,052 --> 00:03:07,120 AND SO ON. 52 00:03:07,220 --> 00:03:09,255 WELL, IN AQUILA THATS NOT THE CASE. 53 00:03:09,355 --> 00:03:12,192 JAMES: THE SEVEN BRIGHTEST STARS IN ORDER OF BRIGHTNESS 54 00:03:12,292 --> 00:03:13,193 ARE, 55 00:03:13,293 --> 00:03:14,194 1. 56 00:03:14,294 --> 00:03:15,195 ALTAIR IS ALPHA 57 00:03:15,295 --> 00:03:16,196 2. 58 00:03:16,296 --> 00:03:17,197 TARAZED IS GAMMA 59 00:03:17,297 --> 00:03:18,198 3. 60 00:03:18,298 --> 00:03:19,199 OKAB IS - ZETA 61 00:03:19,299 --> 00:03:20,200 4. 62 00:03:20,300 --> 00:03:21,201 ALMIZAN 3 IS THETA 63 00:03:21,301 --> 00:03:22,202 5. 64 00:03:22,302 --> 00:03:23,203 ALMIZAN 1 IS DELTA 65 00:03:23,303 --> 00:03:24,204 6. 66 00:03:24,304 --> 00:03:25,205 AL THALI-MAIN PRIOR IS LAMBDA 67 00:03:25,305 --> 00:03:26,206 AND LASTLY, 7. 68 00:03:26,306 --> 00:03:27,207 ALSHAIN IS BETA. 69 00:03:27,307 --> 00:03:28,408 DEAN: WEIRD. 70 00:03:28,508 --> 00:03:30,777 JAMES: DID YOU KNOW THAT AQUILA THE EAGLE THAT WE 71 00:03:30,877 --> 00:03:34,180 RECOGNIZE TODAY IS ACTUALLY A COMBINATION OF THE ORIGINAL 72 00:03:34,280 --> 00:03:37,550 AQUILA AND A NOW OBSOLETE CONSTELLATION THAT WAS NEARBY? 73 00:03:37,650 --> 00:03:39,052 DEAN: THATS RIGHT, JAMES. 74 00:03:39,152 --> 00:03:42,622 LIKE BOOTES THE HERDSMAN (THAT NOW INCLUDES THE DEFUNCT CONSTELLATION 75 00:03:42,722 --> 00:03:48,962 QUANDRANS MURALIS), AQUILA ACQUIRED THE STARS OF THE EQUALLY DEFUNCT CONSTELLATION ANTINOUS 76 00:03:49,062 --> 00:03:50,163 . 77 00:03:50,263 --> 00:03:51,998 JAMES: ANTINOUS WAS CREATED BY THE ROMAN EMPEROR 78 00:03:52,098 --> 00:03:54,300 HADRIAN IN 132 A.D. 79 00:03:54,400 --> 00:03:57,971 IN HONOR OF HIS YOUTHFUL COMPANION OF THE SAME NAME . 80 00:03:58,071 --> 00:04:03,676 AS THE CENTURIES PASSED, ANTINOUS WAS LATER DEMOTED TO AN ASTERISM WITHIN AQUILA AND EVENTUALLY 81 00:04:03,776 --> 00:04:07,880 DISCARDED WHEN THE INTERNATIONAL ASTRONOMICAL UNION FORMALIZED THE CONSTELLATIONS IN 1930. 82 00:04:07,981 --> 00:04:12,952 DEAN: THE STARS ALMIZAN 3, ALMIZAN 2 AND ALSHAIN 83 00:04:13,052 --> 00:04:15,121 ARE WHERE ANTINOUS USED TO BE. 84 00:04:15,221 --> 00:04:17,490 YOU CAN FIND THEM IN THE EASTERN PORTION OF AQUILA. 85 00:04:17,590 --> 00:04:21,060 DEAN: SO CHECK OUT AQUILA THE EAGLE AND IT'S MANY 86 00:04:21,160 --> 00:04:22,428 INTERESTING STARS TONIGHT. 87 00:04:22,528 --> 00:04:23,630 JAMES: WOW! 88 00:04:23,730 --> 00:04:25,832 SO MANY NEAT THINGS TO SEE WHEN YOU REMEMBER TO 89 00:04:25,932 --> 00:04:29,932 BOTH: KEEP LOOKING UP!