WEBVTT 00:20.387 --> 00:23.656 align:left position:42.5%,start line:83% size:47.5% DEAN: HEY THERE STAR GAZERS. 00:23.757 --> 00:26.593 align:left position:72.5%,start line:83% size:17.5% IM DEAN REGAS, ASTRONOMER FROM THE CINCINNATI OBSERVATORY. 00:26.693 --> 00:28.828 align:left position:40%,start line:83% size:50% JAMES: AND I'M JAMES ALBURY, DIRECTOR OF THE KIKA 00:28.928 --> 00:31.197 align:left position:72.5%,start line:89% size:17.5% SILVA PLA PLANETARIUM IN GAINESVILLE, FLORIDA. 00:31.297 --> 00:34.034 align:left position:72.5%,start line:83% size:17.5% AND WERE HERE TO HELP YOU FIND YOUR WAY AROUND THE SKY. 00:34.134 --> 00:36.469 align:left position:42.5%,start line:83% size:47.5% DEAN: STARS ARE NOT ALWAYS WHAT THEY SEEM. 00:36.569 --> 00:41.107 align:left position:75%,start line:83% size:15% MOST STARS IN THE SKY ARE REALLY TWO, THREE, OR MORE STARS ORBITING EACH OTHER. 00:41.207 --> 00:43.977 align:left position:75%,start line:89% size:15% MANY STARS WILDLY FLUCTUATE IN BRIGHTNESS. 00:44.077 --> 00:45.545 align:left position:70%,start line:89% size:20% THEY'RE ALL DIFFERENT COLORS AND TEMPERATURES. 00:45.645 --> 00:49.582 align:left position:77.5%,start line:83% size:12.5% SOME ARE NEWLY BORN AND OTHERS ARE NEARING THEIR DRAMATIC DEMISE. 00:49.682 --> 00:52.252 align:left position:40%,start line:83% size:50% JAMES: THIS WEEK WERE GOING TO LOOK AT THREE STARS 00:52.352 --> 00:54.621 align:left position:82.5%,start line:89% size:7.5% IN THE FALL SKY WITH HIDDEN SECRETS. 00:54.721 --> 00:58.358 align:left position:77.5%,start line:83% size:12.5% THE FIRST STAR IS ACTUALLY TWO BEAUTIFULLY COLORED STARS IN A SMALL TELESCOPE. 00:58.458 --> 01:00.960 align:left position:42.5%,start line:83% size:47.5% DEAN: THE SECOND STAR WILL MAKE YOUR HEAD SPIN. 01:01.061 --> 01:03.229 align:left position:40%,start line:83% size:50% JAMES: AND THE THIRD IS A LONELY STAR WITH A FUNNY 01:03.329 --> 01:06.800 align:left position:77.5%,start line:83% size:12.5% NAME THAT GAVE ASTRONOMERS A BIG PLANETARY SURPRISE. 01:06.900 --> 01:11.204 align:left position:72.5%,start line:83% size:17.5% AS OUR TELESCOPES GET BETTER AND BETTER, WERE UNCOVERING THE MYSTERIOUS NATURE OF STARS 01:11.304 --> 01:12.739 align:left position:20%,start line:89% size:70% TRILLIONS OF MILES AWAY. 01:12.839 --> 01:16.176 align:left position:42.5%,start line:83% size:47.5% DEAN: LET US INTRODUCE YOU TO THE STARS ALBIREO, 01:16.276 --> 01:17.477 align:left position:22.5%,start line:89% size:67.5% ALTAIR AND FOMALHAUT. 01:17.577 --> 01:20.747 align:left position:40%,start line:83% size:50% JAMES: OKAY, WE HAVE OUR SKIES SET TO 10:00 P.M. 01:20.847 --> 01:22.682 align:left position:17.5%,start line:89% size:72.5% THIS MONTH LOOKING WEST. 01:22.782 --> 01:25.752 align:left position:65%,start line:89% size:25% THE MOST PROMINENT FEATURE IS THE SUMMER TRIANGLE. 01:25.852 --> 01:29.022 align:left position:77.5%,start line:83% size:12.5% LOOK FOR THREE REALLY BRIGHT STARS IN THE SKY AND YOU'VE FOUND IT! 01:29.122 --> 01:32.092 align:left position:42.5%,start line:83% size:47.5% DEAN: THE THREE STARS ARE CALLED VEGA, ALTAIR, AND 01:32.192 --> 01:33.326 align:left position:42.5%,start line:89% size:47.5% DENEB. 01:33.426 --> 01:35.195 align:left position:40%,start line:83% size:50% JAMES: NOW DENEB IS SUPPOSED TO BE THE BRIGHT TAIL 01:35.295 --> 01:39.332 align:left position:72.5%,start line:83% size:17.5% OF THE CONSTELLATION CYGNUS THE SWAN BUT WERE GOING TO ZOOM IN ON THE FAINTER HEAD STAR 01:39.432 --> 01:40.900 align:left position:85%,start line:89% size:5% VISIBLE WITHIN THE SUMMER TRIANGLE. 01:41.000 --> 01:43.803 align:left position:42.5%,start line:83% size:47.5% DEAN: THIS IS THE STAR CALLED ALBIREO AND ITS ONE 01:43.903 --> 01:46.739 align:left position:75%,start line:83% size:15% OF MY FAVORITE STARS TO LOOK AT WITH A SMALL TELESCOPE. 01:46.840 --> 01:50.009 align:left position:42.5%,start line:83% size:47.5% DEAN: WHEN YOU LOOK CLOSER AT ALBIREO, YOU FIND 01:50.110 --> 01:53.079 align:left position:72.5%,start line:83% size:17.5% ITS REALLY A DOUBLE STAR - TWO STARS ORBITING EACH OTHER. 01:53.179 --> 01:56.850 align:left position:27.5%,start line:83% size:62.5% THE BIGGER ONE IS ORANGE IN COLOR AND THE SMALLER ONE IS BRILLIANT 01:56.950 --> 01:58.651 align:left position:42.5%,start line:89% size:47.5% BLUE. 01:58.751 --> 02:02.956 align:left position:77.5%,start line:83% size:12.5% THE CONTRASTING COLORS MAKE A COOL AND HOT SIGHT TO SEE - BECAUSE THIS TELLS US THEIR 02:03.056 --> 02:04.891 align:left position:17.5%,start line:89% size:72.5% CONTRASTING TEMPERATURES. 02:04.991 --> 02:06.493 align:left position:22.5%,start line:89% size:67.5% THE BLUER, THE HOTTER. 02:06.593 --> 02:07.961 align:left position:32.5%,start line:83% size:57.5% THE ORANGER, THE COOLER. 02:08.061 --> 02:11.731 align:left position:75%,start line:83% size:15% THEY'RE LIKE TWO BEAUTIFUL, SPARKLING JEWELS IN THE NIGHT SKY. 02:11.831 --> 02:14.801 align:left position:40%,start line:83% size:50% JAMES: NOW LET'S GET BACK TO THE STAR ALTAIR AND 02:14.901 --> 02:16.636 align:left position:25%,start line:89% size:65% IT'S HIDDEN SECRET. 02:16.736 --> 02:21.307 align:left position:75%,start line:83% size:15% ALTAIR LOOKS LIKE ANY ORDINARY BRIGHT WHITE STAR, BUT IT IS ONE OF THE CLOSER STARS TO 02:21.407 --> 02:23.309 align:left position:22.5%,start line:83% size:67.5% US, AT ONLY 17 LIGHT YEARS AWAY. 02:23.409 --> 02:26.279 align:left position:42.5%,start line:83% size:47.5% DEAN: AND BECAUSE ITS RELATIVELY CLOSE, ASTRONOMERS 02:26.379 --> 02:30.783 align:left position:70%,start line:83% size:20% COULD UNCOVER ALTAIRS SECRET - ITS MIND-BOGGLING ROTATIONAL RATE. 02:30.884 --> 02:32.152 align:left position:40%,start line:83% size:50% JAMES: MEANING IT SPINS 02:32.252 --> 02:33.153 align:left position:35%,start line:89% size:55% REALLY FAST! 02:33.253 --> 02:34.888 align:left position:42.5%,start line:83% size:47.5% DEAN: OUR SUN SPINS AS WELL. 02:34.988 --> 02:39.759 align:left position:72.5%,start line:83% size:17.5% THE SUN ROTATES ABOUT 2 KILOMETERS PER SECOND AT ITS EQUATOR SO IT TAKES ABOUT 02:39.859 --> 02:42.162 align:left position:25%,start line:83% size:65% 25 DAYS FOR THE SUN TO SPIN ONCE. 02:42.262 --> 02:45.431 align:left position:85%,start line:89% size:5% NOW LETS COMPARE OUR SUN TO ALTAIR. 02:45.532 --> 02:49.736 align:left position:75%,start line:83% size:15% ALTAIR IS ALMOST TWICE AS BIG AS THE SUN AND SHINES 11 TIMES BRIGHTER. 02:49.836 --> 02:53.173 align:left position:77.5%,start line:83% size:12.5% BUT HOLD ONTO YOUR SEATS, THIS STAR SPINS SUPER-FAST! 02:53.273 --> 02:59.212 align:left position:75%,start line:83% size:15% AT THE EQUATOR, ALTAIR ROTATES AT ABOUT 286 KILOMETERS PER SECOND. 02:59.312 --> 03:03.116 align:left position:77.5%,start line:83% size:12.5% THAT MEANS THAT THE ENTIRE STAR SPINS ONCE EVERY 9 HOURS! 03:03.216 --> 03:05.818 align:left position:40%,start line:83% size:50% JAMES: THIS UNBELIEVABLE ROTATIONAL VELOCITY HAS 03:05.919 --> 03:08.254 align:left position:77.5%,start line:89% size:12.5% ACTUALLY AFFECTED THE SHAPE OF THIS STAR. 03:08.354 --> 03:13.126 align:left position:77.5%,start line:83% size:12.5% INSTEAD OF A SPHERE, ALTAIR IS SQUISHED AT THE POLES AND BULGES AT THE EQUATOR. 03:13.226 --> 03:17.497 align:left position:75%,start line:83% size:15% THE ENTIRE MASS OF THE STAR HAS SHIFTED AND HAS LEFT ALTAIR LOOKING LIKE A RAPIDLY 03:17.597 --> 03:18.598 align:left position:32.5%,start line:89% size:57.5% SPINNING EGG. 03:18.698 --> 03:21.201 align:left position:42.5%,start line:83% size:47.5% DEAN: NEXT, LETS LOOK SOUTH AT 10:00 P.M. 03:21.301 --> 03:23.303 align:left position:80%,start line:89% size:10% WHERE YOU'LL SEE ONLY ONE BRIGHT STAR. 03:23.403 --> 03:27.840 align:left position:75%,start line:83% size:15% THIS IS FOMALHAUT THE BRIGHTEST STAR IN THE CONSTELLATION OF PISCIS AUSTRALIS, OR THE 03:27.941 --> 03:29.042 align:left position:32.5%,start line:89% size:57.5% SOUTHERN FISH. 03:29.142 --> 03:31.177 align:left position:40%,start line:83% size:50% JAMES: WITH A LITTLE IMAGINATION YOU CAN MAKE OUT 03:31.277 --> 03:35.381 align:left position:72.5%,start line:83% size:17.5% A GOLDFISH SHAPE IN THESE STARS WITH FOMALHAUT AS ONE BEADY EYE... 03:35.481 --> 03:36.382 align:left position:42.5%,start line:89% size:47.5% CUTE. 03:36.482 --> 03:37.750 align:left position:42.5%,start line:83% size:47.5% DEAN: FOMALHAUT IS A 03:37.850 --> 03:41.287 align:left position:30%,start line:83% size:60% BLUE-WHITE STAR 25 LIGHT YEARS AWAY, MAKING IT ANOTHER CLOSE 03:41.387 --> 03:44.157 align:left position:75%,start line:89% size:15% TARGET TO OBSERVE WITH THE BEST TELESCOPES. 03:44.257 --> 03:48.161 align:left position:70%,start line:83% size:20% IN 2004 ASTRONOMERS DETECTED A DUST RING AROUND FOMALHAUT. 03:48.261 --> 03:50.463 align:left position:40%,start line:83% size:50% JAMES: WE CALL IT PROTO-PLANETARY DEBRIS. 03:50.563 --> 03:53.533 align:left position:42.5%,start line:83% size:47.5% DEAN: OR JUST A BIG RING OF STUFF, AND EVERYONE 03:53.633 --> 03:55.301 align:left position:32.5%,start line:89% size:57.5% GOT EXCITED. 03:55.401 --> 03:58.671 align:left position:75%,start line:83% size:15% THIS WAS THE KIND OF STUFF THAT MIGHT HARBOR A PLANET OR EVEN A WHOLE SOLAR SYSTEM. 03:58.771 --> 04:02.108 align:left position:40%,start line:83% size:50% JAMES: AND THEN IN 2008, ASTRONOMERS CAUGHT THE FIRST 04:02.208 --> 04:06.980 align:left position:70%,start line:83% size:20% VISIBLE-LIGHT IMAGE OF A PLANET ORBITING AROUND ANOTHER STAR - ORBITING AROUND FOMALHAUT. 04:07.080 --> 04:10.183 align:left position:75%,start line:89% size:15% YOU HAVE TO REALLY SQUINT, BUT THERE IT IS. 04:10.283 --> 04:13.019 align:left position:40%,start line:83% size:50% JAMES: SO CHECK OUT FOMALHAUT TONIGHT, THE LONE STAR 04:13.119 --> 04:14.020 align:left position:32.5%,start line:89% size:57.5% IN THE SOUTH. 04:14.120 --> 04:15.555 align:left position:42.5%,start line:83% size:47.5% DEAN: THATS NOT SO LONELY AFTER ALL. 04:15.655 --> 04:17.857 align:left position:40%,start line:83% size:50% JAMES: FIND RAPIDLY ROTATING ALTAIR IN THE WESTERN 04:17.957 --> 04:19.926 align:left position:75%,start line:89% size:15% SKY ON THE LEFT SIDE OF THE SUMMER TRIANGLE. 04:20.026 --> 04:22.595 align:left position:42.5%,start line:83% size:47.5% DEAN: AND DONT FORGET TO TRAIN YOUR TELESCOPES ON 04:22.695 --> 04:25.131 align:left position:85%,start line:89% size:5% ALBIREO TO DISCOVER ITS SECOND SUN. 04:25.231 --> 04:29.802 align:left position:77.5%,start line:83% size:12.5% WHEN YOU LOOK AT THE STARS ABOVE WHO KNOWS WHAT OTHER HIDDEN SECRETS YOULL DISCOVER WHEN 04:29.902 --> 04:30.803 align:left position:45%,start line:89% size:45% YOU 04:30.903 --> 04:34.903 align:left position:42.5%,start line:83% size:47.5% BOTH: KEEP LOOKING UP!