WEBVTT 00:20.787 --> 00:22.522 align:left position:27.5%,start line:89% size:62.5% LETS LOOK AT LYRA! 00:22.622 --> 00:23.590 align:left position:42.5%,start line:83% size:47.5% DEAN: WELCOME TO 00:23.690 --> 00:24.958 align:left position:35%,start line:89% size:55% STAR GAZERS. 00:25.058 --> 00:27.293 align:left position:72.5%,start line:83% size:17.5% I'M DEAN REGAS, ASTRONOMER FROM THE CINCINNATI OBSERVATORY. 00:27.394 --> 00:29.562 align:left position:42.5%,start line:83% size:47.5% JAMES: AND I'M JAMES ALBURY, DIRECTOR OF THE KIKA 00:29.662 --> 00:32.198 align:left position:72.5%,start line:89% size:17.5% SILVA PLA PLANETAR-IUM IN GAINESVILLE FLORIDA. 00:32.298 --> 00:35.301 align:left position:25%,start line:83% size:65% THE SUMMER TRIANGLE IS RIDING HIGH AT SUNSET THIS WEEK, 00:35.402 --> 00:37.904 align:left position:27.5%,start line:83% size:62.5% SO WE'RE GOING TO TALK ABOUT ONE OF THE CONSTELLATIONS THAT 00:38.004 --> 00:40.306 align:left position:27.5%,start line:83% size:62.5% MAKES UP THIS VERY POPULAR GROUPING OF STARS. 00:40.407 --> 00:41.708 align:left position:42.5%,start line:83% size:47.5% DEAN: THAT'S RIGHT, JAMES. 00:41.808 --> 00:44.577 align:left position:80%,start line:83% size:10% WE'RE GOING TO GIVE YOU A GUIDED TOUR OF THE CONSTELLATION LYRA 00:44.677 --> 00:46.012 align:left position:37.5%,start line:89% size:52.5% THE HARP. 00:46.112 --> 00:49.783 align:left position:25%,start line:83% size:65% IT'S TINY AND CUTE, BUT REALLY FUN TO FIND IN THE SUMMER SKY. 00:49.883 --> 00:50.917 align:left position:30%,start line:89% size:60% LET'S SHOW YOU! 00:51.017 --> 00:53.520 align:left position:42.5%,start line:83% size:47.5% DEAN: OK, WE'VE SET UP OUR SKIES FOR ANY NIGHT 00:53.620 --> 00:55.688 align:left position:37.5%,start line:83% size:52.5% THIS WEEK, ABOUT AN HOUR AFTER SUNSET. 00:55.789 --> 00:59.726 align:left position:12.5%,start line:83% size:77.5% IF YOU LOOK DIRECTLY OVERHEAD, YOU WILL SEE A GROUPING OF STARS WE CALL THE 00:59.826 --> 01:01.661 align:left position:30%,start line:89% size:60% SUMMER TRIANGLE. 01:01.761 --> 01:05.465 align:left position:72.5%,start line:83% size:17.5% THE BRIGHTEST STAR IN THE TRIANGLE IS ACTUALLY THE FIFTH BRIGHTEST STAR WE CAN SEE FROM EARTH 01:05.565 --> 01:07.167 align:left position:45%,start line:83% size:45% AND ITS NAME IS VEGA. 01:07.267 --> 01:09.736 align:left position:42.5%,start line:83% size:47.5% JAMES: ONCE YOU HAVE FOUND VEGA, YOU'VE FOUND LYRA 01:09.836 --> 01:11.638 align:left position:37.5%,start line:89% size:52.5% THE HARP. 01:11.738 --> 01:14.874 align:left position:72.5%,start line:83% size:17.5% THE NEXT BRIGHTEST STAR IN THE SUMMER TRIANGLE IS ALTAIR IN AQUILA THE EAGLE AND THE THIRD 01:14.974 --> 01:16.476 align:left position:37.5%,start line:83% size:52.5% BRIGHTEST IS DENEB IN CYGNUS 01:16.576 --> 01:17.710 align:left position:37.5%,start line:89% size:52.5% THE SWAN. 01:17.811 --> 01:21.081 align:left position:42.5%,start line:83% size:47.5% DEAN: LYRA IS OFTEN SAID TO BE THE SMALL HARP THAT 01:21.181 --> 01:25.385 align:left position:72.5%,start line:83% size:17.5% BELONGED TO APOLLO AND WAS SUBSEQUENTLY GIVEN TO ORPHEUS. 01:25.485 --> 01:30.290 align:left position:75%,start line:83% size:15% ORPHEUS WAS SO SKILLED AT PLAYING THE HARP, THAT THE MUSIC WAS SAID TO CHARM ANY-ONE WHO 01:30.390 --> 01:31.891 align:left position:20%,start line:89% size:70% HEARD IT; EVEN ANIMALS. 01:31.991 --> 01:34.494 align:left position:42.5%,start line:83% size:47.5% JAMES: INDEED, WHEN ORPHEUS PLAYED THE HARP, 01:34.594 --> 01:38.765 align:left position:77.5%,start line:83% size:12.5% HE COULD EVEN CHARM INANIMATE OBJECTS LIKE TREES AND ROCKS. 01:38.865 --> 01:42.001 align:left position:35%,start line:83% size:55% FURTHERMORE, WHEN OR-PHEUS JOINED JASON AND THE ARGONAUTS, 01:42.102 --> 01:47.173 align:left position:77.5%,start line:83% size:12.5% HIS MUSIC WAS ABLE TO MUFFLE THE SONGS OF THE DREADED SIRENS WHO'S VOICES TRIED TO LEAD 01:47.273 --> 01:48.441 align:left position:32.5%,start line:83% size:57.5% THE ARGONAUTS TO THEIR DOOM! 01:48.541 --> 01:50.844 align:left position:42.5%,start line:83% size:47.5% DEAN: QUITE A FEW CULTURES SAW THIS GROUPING OF 01:50.944 --> 01:52.645 align:left position:30%,start line:89% size:60% STARS AS A HARP. 01:52.745 --> 01:57.484 align:left position:77.5%,start line:83% size:12.5% IN WALES, THEY REFER TO IT AS KING ARTHURS HARP AND IN PERSIA THEY CALLED IT THE LYRE 01:57.584 --> 01:58.685 align:left position:37.5%,start line:89% size:52.5% OF ZURAH. 01:58.785 --> 02:02.122 align:left position:42.5%,start line:83% size:47.5% JAMES: LYRA IS ALSO KNOWN AS PRAESEPE SALVATORIS 02:02.222 --> 02:04.891 align:left position:75%,start line:83% size:15% (THE MANGER OF THE INFANT SAVIOR) AND TO THE INCAS, 02:04.991 --> 02:09.362 align:left position:15%,start line:83% size:75% THEY SAW IT AS URCUCHILLAY, A GOD IN THE FORM OF A LLAMA WHO WATCHED OVER 02:09.462 --> 02:10.697 align:left position:40%,start line:89% size:50% ANIMALS. 02:10.797 --> 02:13.600 align:left position:42.5%,start line:83% size:47.5% JAMES: OF THE 25 STARS THAT ARE WITHIN THE INTERNATIONAL 02:13.700 --> 02:18.538 align:left position:67.5%,start line:83% size:22.5% ASTRONOMICAL UNIONS BOUNDARY FOR THE CONSTELLATION LYRA, FIVE OF THOSE STARS ARE BRIGHT ENOUGH 02:18.638 --> 02:20.940 align:left position:77.5%,start line:83% size:12.5% TO BE VISIBLE WITH THE NAKED EYE FROM MOST CITIES. 02:21.040 --> 02:24.010 align:left position:42.5%,start line:83% size:47.5% DEAN: THE BRIGHTEST ONE IS OF COURSE VEGA. 02:24.110 --> 02:29.315 align:left position:77.5%,start line:83% size:12.5% VEGAS BLUE-WHITE COLOR TELLS US THAT IT IS MUCH HOTTER THAN OUR OWN YELLOW-ORANGE SUN. 02:29.415 --> 02:34.721 align:left position:77.5%,start line:83% size:12.5% IN FACT, COMPARED TO OUR SUN'S TEMPERATURE OF 10 THOUSAND DEGREES FAHRENHEIT, VEGA BLAZES 02:34.821 --> 02:38.158 align:left position:40%,start line:83% size:50% AWAY AT A FIERCE 17 THOUSAND DEGREES FAHRENHEIT! 02:38.258 --> 02:41.728 align:left position:42.5%,start line:83% size:47.5% JAMES: VEGA IS ALSO CONSIDERABLY LARGER, FOR WHILE 02:41.828 --> 02:44.964 align:left position:77.5%,start line:83% size:12.5% OUR SUN IS A LIT-TLE UNDER A MILLION MILES WIDE, 02:45.064 --> 02:49.435 align:left position:70%,start line:83% size:20% VEGA IS ALMOST THREE MILLION MILES IN DIAMETER, WHICH MAKES IT EASY TO UNDERSTAND THAT IF 02:49.536 --> 02:55.074 align:left position:72.5%,start line:83% size:17.5% WE COULD PLACE OUR SUN AND VEGA SIDE BY SIDE, VEGA WOULD SHINE 58 TIMES BRIGHTER 02:55.175 --> 02:56.209 align:left position:32.5%,start line:89% size:57.5% THAN THE SUN. 02:56.309 --> 02:57.810 align:left position:42.5%,start line:83% size:47.5% JAMES: NEAR VEGA, 02:57.911 --> 03:00.480 align:left position:10%,start line:83% size:80% THERE ARE FOUR STARS THAT MAKE A PARALLELOGRAM. 03:00.580 --> 03:02.248 align:left position:37.5%,start line:83% size:52.5% TRAVELING COUNTER- CLOCKWISE FROM VEGA, 03:02.348 --> 03:07.587 align:left position:75%,start line:83% size:15% WE HAVE ZETA LYRAE, DELTA LYRAE AND THE TWO ON THE FAR END ARE, SULAFAT AND SHELIAK. 03:07.687 --> 03:10.857 align:left position:42.5%,start line:83% size:47.5% DEAN: AS FAR AS STATISTICS GO, THE STARS IN LYRA 03:10.957 --> 03:12.192 align:left position:22.5%,start line:89% size:67.5% ARE QUITE IMPRESSIVE. 03:12.292 --> 03:16.629 align:left position:77.5%,start line:83% size:12.5% ZETA LYRAE AND DELTA LYRAE ARE BOTH BINARY STAR SYSTEMS. 03:16.729 --> 03:22.569 align:left position:75%,start line:83% size:15% ZETA LYRAE IS 156 LIGHT YEARS AWAY AND DELTA LYRAE IS A WHOPPING 1,100 LIGHT YEARS 03:22.669 --> 03:23.870 align:left position:40%,start line:89% size:50% FROM US! 03:23.970 --> 03:25.705 align:left position:30%,start line:83% size:60% COMPARE THAT TO VEGA WHICH IS ONLY 03:25.805 --> 03:27.307 align:left position:25%,start line:89% size:65% 25 LIGHT YEARS AWAY. 03:27.407 --> 03:29.676 align:left position:42.5%,start line:83% size:47.5% JAMES: MY TWO FAVORITE STARS IN THE PARALLELOGRAM 03:29.776 --> 03:31.945 align:left position:20%,start line:89% size:70% ARE SULAFAT AND SHELIAK. 03:32.045 --> 03:37.617 align:left position:77.5%,start line:83% size:12.5% SULAFAT IS 2400 TIMES AS BRIGHT AS OUR SUN AND IS ABOUT 620 LIGHT YEARS AWAY. 03:37.717 --> 03:41.221 align:left position:37.5%,start line:83% size:52.5% MEANWHILE, SHELIAK IS OVER 26,000 TIMES AS BRIGHT AS 03:41.321 --> 03:45.825 align:left position:77.5%,start line:83% size:12.5% OUR SUN, HAS A SURFACE TEMPERATURE OF OVER 54,000 DEGREES FAHRENHEIT AND IS 03:45.925 --> 03:48.261 align:left position:22.5%,start line:89% size:67.5% 960 LIGHT YEARS AWAY. 03:48.361 --> 03:52.131 align:left position:75%,start line:83% size:15% SHELIAK WAS ALSO MENTIONED IN AN EPISODE OF STAR TREK THE NEXT GENERATION, 03:52.232 --> 03:53.866 align:left position:10%,start line:89% size:80% SO I'M REALLY HAPPY ABOUT THAT. 03:53.967 --> 03:56.736 align:left position:42.5%,start line:83% size:47.5% JAMES: ONE LAST THING ABOUT LYRA. 03:56.836 --> 04:00.974 align:left position:72.5%,start line:83% size:17.5% DID YOU KNOW THAT THE SUN AND ALL THE PLANETS IN OUR SOLAR SYSTEM ARE HEADING TOWARDS VEGA? 04:01.074 --> 04:02.809 align:left position:42.5%,start line:83% size:47.5% DEAN: THATS RIGHT, JAMES! 04:02.909 --> 04:08.281 align:left position:77.5%,start line:83% size:12.5% OUR SOLAR SYSTEM IS RACING TOWARDS VEGA AT THE INCREDIBLE SPEED OF 12 MILES PER SECOND, 04:08.381 --> 04:10.450 align:left position:30%,start line:83% size:60% AND EVEN THOUGH VEGA IS ONLY 25 04:10.550 --> 04:13.386 align:left position:27.5%,start line:83% size:62.5% LIGHT YEARS AWAY, AT THIS SPEED IT WOULD STILL TAKE OUR SUN 04:13.486 --> 04:16.556 align:left position:80%,start line:89% size:10% ALMOST 500 MILLION YEARS TO REACH VEGA. 04:16.656 --> 04:17.824 align:left position:42.5%,start line:83% size:47.5% JAMES: WELL THAT'S GOOD. 04:17.924 --> 04:19.959 align:left position:70%,start line:83% size:20% I'D HATE FOR US TO GET AN INTERGALACTIC SPEEDING TICKET. 04:20.059 --> 04:21.694 align:left position:42.5%,start line:83% size:47.5% DEAN: RIGHT?! 04:21.794 --> 04:26.132 align:left position:87.5%,start line:83% size:2.5% SO GET OUTSIDE AND CHECK OUT LYRA THE HARP AND SEE IF THE STARS PLAY SWEET MUSIC! 04:26.232 --> 04:27.700 align:left position:42.5%,start line:83% size:47.5% JAMES: IT'S EASY TO DO WHEN YOU 04:27.800 --> 04:31.800 align:left position:42.5%,start line:83% size:47.5% BOTH: KEEP LOOKING UP!.