WEBVTT 00:20.520 --> 00:22.288 align:left position:17.5% line:89% size:72.5% THE SUPER SPRING TRIANGLE 00:22.389 --> 00:27.527 align:left position:80% line:83% size:10% JAMES: HEY THERE STAR GAZERS, I M JAMES ALBURY, DIRECTOR OF THE KIKA SILVA PLA PLANETARIUM 00:27.627 --> 00:29.029 align:left position:20% line:89% size:70% IN GAINESVILLE, FLORIDA. 00:29.129 --> 00:31.798 align:left position:80% line:83% size:10% DEAN: AND I M DEAN REGAS, ASTRONOMER FOR THE CINCINNATI OBSERVATORY. 00:31.898 --> 00:35.135 align:left position:77.5% line:83% size:12.5% WE RE HERE TO HELP YOU FIND YOU WAY AROUND THE SKY TONIGHT. 00:35.235 --> 00:39.506 align:left position:77.5% line:83% size:12.5% IT S THE MIDDLE OF SPRING AND THREE BRIGHT STARS ARE TAKING CENTER STAGE. 00:39.606 --> 00:43.009 align:left position:77.5% line:83% size:12.5% JAMES: IT S CALLED THE SPRING TRIANGLE AND IT S HUGE! 00:43.109 --> 00:48.448 align:left position:77.5% line:83% size:12.5% COVERING ONE-SIXTH OF THE SKY, THE SPRING TRIANGLE INCORPORATES THREE ANCIENT CONSTELLATIONS. 00:48.548 --> 00:51.618 align:left position:80% line:83% size:10% THERE S A LION, A HERDSMAN, AND A MAIDEN UP THERE. 00:51.718 --> 00:53.219 align:left position:17.5% line:89% size:72.5% DEAN: NOW, I LL BE HONEST. 00:53.319 --> 00:56.856 align:left position:75% line:83% size:15% IT S REALLY TOUGH TO SEE A LION, A HERDSMAN, AND A MAIDEN IN THOSE STARS. 00:56.956 --> 00:59.526 align:left position:77.5% line:83% size:12.5% BUT EVEN THOUGH I DON T HAVE THE REQUIRED IMAGINATION 00:59.626 --> 01:01.661 align:left position:85% line:89% size:5% JAMES: I DON T KNOW IF ANYONE DOES 01:01.761 --> 01:04.164 align:left position:80% line:89% size:10% DEAN: THE THREE STARS ARE EASY TO FIND. 01:04.264 --> 01:06.900 align:left position:75% line:83% size:15% JAMES: AND AT LEAST YOU LL KNOW WHERE THESE CONSTELLATIONS LIVE. 01:07.000 --> 01:08.268 align:left position:10% line:89% size:80% DEAN: WHAT ARE WE TALKING ABOUT? 01:08.368 --> 01:09.702 align:left position:30% line:89% size:60% LET S SHOW YOU. 01:09.803 --> 01:13.606 align:left position:77.5% line:83% size:12.5% DEAN: OKAY, WE RE FACING SOUTHEAST AT 10PM ANY NIGHT THIS WEEK. 01:13.706 --> 01:18.144 align:left position:75% line:83% size:15% WE HAVE THE SUPER-WIDE-ANGLE VIEW ON, SINCE THE SPRING TRIANGLE IS HUGE. 01:18.244 --> 01:23.116 align:left position:72.5% line:83% size:17.5% JAMES: IF YOU LIVE IN A CITY, THE THREE STARS IN THE SPRING TRIANGLE MIGHT BE ALL YOU CAN 01:23.216 --> 01:27.220 align:left position:82.5% line:89% size:7.5% SEE. AND THERE THEY ARE, 1, 2, AND 3. 01:27.320 --> 01:29.589 align:left position:77.5% line:83% size:12.5% DEAN: WE LL START WITH THE STAR ON THE FAR RIGHT. 01:29.689 --> 01:33.860 align:left position:77.5% line:83% size:12.5% THAT S REGULUS, THE BRIGHTEST STAR IN THE CONSTELLATION OF LEO THE LION. 01:33.960 --> 01:38.598 align:left position:77.5% line:83% size:12.5% YOU USUALLY START SEEING REGULUS EARLY IN THE SPRING AND IT SHINES WITH A BLUE-WHITE 01:38.698 --> 01:40.333 align:left position:42.5% line:89% size:47.5% LIGHT. 01:40.433 --> 01:44.404 align:left position:77.5% line:83% size:12.5% JAMES: THE STAR FARTHEST TO THE LEFT, AND THE BRIGHTEST OF THE TRIO IS ARCTURUS. 01:44.504 --> 01:48.141 align:left position:72.5% line:83% size:17.5% ARCTURUS IS THE BRIGHTEST STAR IN THE HERDSMAN NAMED BOOTES. 01:48.241 --> 01:52.512 align:left position:77.5% line:83% size:12.5% IF YOU LOOK CAREFULLY, YOU LL NOTICE THAT ARCTURUS IS QUITE ORANGE - A VERY DIFFERENT 01:52.612 --> 01:54.380 align:left position:25% line:89% size:65% COLOR THAN REGULUS. 01:54.481 --> 01:58.852 align:left position:70% line:83% size:20% DEAN: AND THE THIRD STAR IN THE SPRING TRIANGLE IS SPICA, THE BRIGHTEST STAR IN VIRGO THE 01:58.952 --> 02:00.153 align:left position:40% line:89% size:50% MAIDEN. 02:00.253 --> 02:03.223 align:left position:77.5% line:83% size:12.5% SPICA IS THE DIMMEST OF THE THREE AND THE BLUEST TOO. 02:03.323 --> 02:08.027 align:left position:80% line:83% size:10% JAMES: LET S COMPARE THE THREE STARS IN THE SPRING TRIANGLE TO OUR SUN. 02:08.128 --> 02:14.334 align:left position:77.5% line:83% size:12.5% THE SUN IS ABOUT 865,000 MILES IN DIAMETER AND LIES ABOUT 93 MILLION MILES AWAY. 02:14.434 --> 02:17.303 align:left position:70% line:89% size:20% THAT S THE DISTANCE LIGHT TRAVELS IN 8 MINUTES. 02:17.403 --> 02:20.039 align:left position:75% line:83% size:15% SO WE D SAY THAT THE SUN IS 8 LIGHT MINUTES AWAY. 02:20.140 --> 02:24.077 align:left position:75% line:83% size:15% DEAN: THE SUN IS DINKY COMPARED TO THE THREE SPRING TRIANGLE STARS. 02:24.177 --> 02:30.950 align:left position:67.5% line:83% size:22.5% REGULUS, FOR EXAMPLE, IS THREE TIMES THE DIAMETER OF THE SUN, SHINES 288 TIMES BRIGHTER AND 02:31.050 --> 02:33.253 align:left position:20% line:89% size:70% IS 79 LIGHT YEARS AWAY. 02:33.353 --> 02:39.993 align:left position:75% line:83% size:15% SO INSTEAD OF 93 MILLION MILES, REGULUS MORE THAN 460 TRILLION MILES AWAY. 02:40.093 --> 02:41.895 align:left position:32.5% line:89% size:57.5% JAMES: YIKES! 02:41.995 --> 02:47.100 align:left position:72.5% line:83% size:17.5% SPICA IS EVEN BIGGER AT 7.5 TIMES THE DIAMETER OF OUR SUN, SHINES TWENTY-TWO HUNDRED TIMES 02:47.200 --> 02:50.036 align:left position:80% line:89% size:10% BRIGHTER AND LIES 250 LIGHT YEARS AWAY. 02:50.136 --> 02:51.638 align:left position:75% line:89% size:15% THAT S EQUAL TO ABOUT 1.5 QUADRILLION MILES! 02:51.738 --> 02:54.941 align:left position:10% line:89% size:80% DEAN: AND THAT LEAVES ARCTURUS. 02:55.041 --> 03:00.780 align:left position:77.5% line:83% size:12.5% IT IS BY FAR THE LARGEST OF THESE STARS AT 25 TIMES THE SUN S DIAMETER. 03:00.880 --> 03:03.950 align:left position:80% line:83% size:10% SINCE IT IS AN ORANGE STAR, IT S NOT AS HOT AS THE OTHERS. 03:04.050 --> 03:09.722 align:left position:75% line:83% size:15% SO WHILE IT STILL SHINES 170 TIMES BRIGHTER THAN OUR SUN, IT DOESN T GIVE OFF NEARLY 03:09.822 --> 03:13.026 align:left position:70% line:89% size:20% AS MUCH ENERGY AS THE HOTTER REGULUS AND SPICA. 03:13.126 --> 03:18.231 align:left position:75% line:83% size:15% JAMES: ARCTURUS IS THE CLOSEST OF THE THREE SPRING TRIANGLE STARS AT AROUND 37 LIGHT YEARS. 03:18.331 --> 03:21.534 align:left position:77.5% line:89% size:12.5% BUT THAT S STILL LIKE 217 TRILLION MILES. 03:21.634 --> 03:23.069 align:left position:17.5% line:89% size:72.5% DEAN: BUT WHO S COUNTING? 03:23.169 --> 03:27.874 align:left position:80% line:83% size:10% DEAN: WE RE ZOOMED IN ON REGULUS AND ITS CONSTELLATION LEO. 03:27.974 --> 03:32.812 align:left position:77.5% line:83% size:12.5% WHEN I CONNECT THE DOTS ON THE MAIN STARS, I GUESS I CAN SEE A LION SITTING WITH HIS 03:32.912 --> 03:34.647 align:left position:17.5% line:89% size:72.5% FRONT PAWS STRETCHED OUT. 03:34.747 --> 03:40.220 align:left position:75% line:83% size:15% WELL, IT S CERTAINLY EASIER TO IMAGINE THAN A HERDSMAN OR A MAIDEN - JUST YOU WAIT AND 03:40.320 --> 03:42.021 align:left position:45% line:89% size:45% SEE. 03:42.121 --> 03:45.325 align:left position:77.5% line:83% size:12.5% THE LION HAS A BACKWARD QUESTION MARK FOR A HEAD ABOVE REGULUS, AND A TRIANGLE FOR A 03:45.425 --> 03:46.893 align:left position:42.5% line:89% size:47.5% TAIL. 03:46.993 --> 03:50.263 align:left position:77.5% line:83% size:12.5% AND THIS IS SUPPOSED TO BE THE NEMEAN LION THAT WAS KILLED BY HERCULES. 03:50.363 --> 03:52.498 align:left position:85% line:89% size:5% WHEW, THAT MUST VE BEEN SOME BATTLE! 03:52.599 --> 03:57.537 align:left position:72.5% line:83% size:17.5% JAMES: NOW WE RE LOOKING AT THE STAR ARCTURUS AND ITS CONSTELLATION OF BOOTES. 03:57.637 --> 04:01.574 align:left position:80% line:83% size:10% DEAN S RIGHT, I CAN T SEE A HERDSMAN IN THESE STARS AT ALL. 04:01.674 --> 04:06.246 align:left position:70% line:83% size:20% INSTEAD, I LOOK FOR STARS THAT MAKE A KITE-SHAPE OR AN ICE CREAM CONE. 04:06.346 --> 04:12.118 align:left position:77.5% line:83% size:12.5% THEN, DOWN AND TO THE RIGHT OF BOOTES, YOU CAN FIND SPICA AND THE STARS OF VIRGO THE 04:12.218 --> 04:13.987 align:left position:40% line:89% size:50% MAIDEN. 04:14.087 --> 04:17.690 align:left position:75% line:83% size:15% SHE IS OFTEN DEPICTED AS A GODDESS LYING ON HER SIDE HOLDING A PIECE OF WHEAT, THE STAR 04:17.790 --> 04:19.492 align:left position:42.5% line:89% size:47.5% SPICA. 04:19.592 --> 04:22.195 align:left position:77.5% line:83% size:12.5% IF YOU CAN SEE A HERDSMAN AND A MAIDEN IN THESE STARS, CONGRATULATIONS, YOU HAVE AN 04:22.295 --> 04:24.063 align:left position:17.5% line:89% size:72.5% ANCIENT GREEK IMAGINATION! 04:24.163 --> 04:26.032 align:left position:70% line:83% size:20% DEAN: SO THERE YOU HAVE IT, THE THREE BRIGHTEST STARS IN THE SPRING SKY MAKING A HUMONGOUS 04:26.132 --> 04:27.634 align:left position:82.5% line:89% size:7.5% TRIANGLE COVERING 1/6 OF THE HEAVENS. 04:27.734 --> 04:29.269 align:left position:12.5% line:89% size:77.5% REGULUS, ARCTURUS, AND SPICA. 04:29.369 --> 04:31.738 align:left position:70% line:83% size:20% JAMES: AND ALTHOUGH YOU MAY HAVE TROUBLE SEEING LEO THE LION AROUND REGULUS 04:31.838 --> 04:33.606 align:left position:77.5% line:89% size:12.5% DEAN: BOOTES THE HERDMAN AROUND ARCTURUS 04:33.706 --> 04:34.841 align:left position:75% line:83% size:15% JAMES: OR VIRGO THE MAIDEN AROUND SPICA, YOU CAN APPRECIATE THESE THREE CELESTIAL BEACONS 04:34.941 --> 04:37.777 align:left position:75% line:83% size:15% FOR WHAT THEY ARE: FASCINATING AND FAR-FLUNG STARS. 04:37.877 --> 04:38.778 align:left position:20% line:89% size:70% IT S ALL THERE WHEN YOU 04:38.878 --> 04:42.878 align:left position:20% line:89% size:70% BOTH: .KEEP LOOKING UP!