WEBVTT 00:20.153 --> 00:24.758 align:left position:12.5%,start line:89% size:77.5% JAMES: WELCOME TO STAR GAZERS. 00:24.858 --> 00:28.561 align:left position:75%,start line:83% size:15% I'M JAMES ALBURY, DIRECTOR OF THE KIKA SILVA PLA PLANETARIUM IN GAINESVILLE FLORIDA. 00:28.661 --> 00:31.865 align:left position:77.5%,start line:83% size:12.5% DEAN: AND I'M DEAN REGAS, ASTRONOMER FROM THE CINCINNATI OBSERVATORY. 00:31.965 --> 00:35.502 align:left position:70%,start line:83% size:20% JAMES: SPRINGTIME IS KNOWN FOR GREAT KITE-FLYING WEATHER. 00:35.602 --> 00:39.539 align:left position:75%,start line:83% size:15% AND COINCIDENTALLY, THERE IS A CONSTELLATION VISIBLE AFTER SUNSET THAT LOOKS SURPRISINGLY 00:39.639 --> 00:40.540 align:left position:35%,start line:89% size:55% LIKE A KITE! 00:40.640 --> 00:42.675 align:left position:17.5%,start line:89% size:72.5% DEAN: THAT'S RIGHT, JAMES. 00:42.776 --> 00:47.013 align:left position:62.5%,start line:83% size:27.5% THIS WEEK WE'RE GOING TO TALK ABOUT THE CONSTELLATION BOOTES THE HERDSMAN, AND GIVE YOU SOME INFORMATION 00:47.113 --> 00:48.948 align:left position:87.5%,start line:89% size:2.5% ABOUT SOME OF ITS BRIGHTEST STARS. 00:49.049 --> 00:50.750 align:left position:22.5%,start line:89% size:67.5% JAMES: LET'S SHOW YOU! 00:50.850 --> 00:55.922 align:left position:77.5%,start line:83% size:12.5% JAMES: OK, WE HAVE OUR SKY SET FOR AN HOUR AFTER SUNSET FACING NORTHEAST WHERE WE SEE 00:56.022 --> 00:58.792 align:left position:77.5%,start line:89% size:12.5% THE BIG DIPPER HIGH ABOVE THE NORTH STAR. 00:58.892 --> 01:02.929 align:left position:75%,start line:83% size:15% IF ITS CUP WAS FULL OF WATER IT'D BE POURING RIGHT INTO THE LITTLE DIPPER AND OVERFLOWING 01:03.029 --> 01:04.731 align:left position:40%,start line:89% size:50% ONTO ME! 01:04.831 --> 01:07.700 align:left position:77.5%,start line:83% size:12.5% DEAN: IF WE SHOOT AN ARROW THROUGH THE TWO STARS ON THE END OF THE BIG DIPPER'S CUP, 01:07.801 --> 01:11.771 align:left position:75%,start line:83% size:15% AND CONTINUE THAT LINE, IT'LL RUN SMACK DAB INTO THE NORTH STAR. 01:11.871 --> 01:15.742 align:left position:75%,start line:83% size:15% JAMES: NOW, LET'S USE THE BIG DIPPERS HANDLE TO FIND BOOTES. 01:15.842 --> 01:19.879 align:left position:77.5%,start line:83% size:12.5% SIMPLY DRAW AN IMAGINARY LINE THROUGH THE HANDLE OF THE BIG DIPPER AND EXTEND IT OUT 01:19.979 --> 01:24.584 align:left position:75%,start line:83% size:15% ALONG THE CURVE, OR ARC, AND YOU'LL ARC YOUR WAY TO THE BRIGHT STAR, ARCTURUS. 01:24.684 --> 01:30.023 align:left position:72.5%,start line:83% size:17.5% DEAN: ARCTURUS IS THE BRIGHTEST STAR IN BOOTES THE HERDSMAN AND HAS THE UNIQUE DISTINCTION 01:30.123 --> 01:35.261 align:left position:77.5%,start line:83% size:12.5% OF BEING THE FOURTH BRIGHTEST STAR IN THE NIGHT SKY; THE BRIGHTEST STAR IS SIRIUS, #2 01:35.361 --> 01:38.465 align:left position:85%,start line:89% size:5% IS CANOPUS AND #3 IS ALPHA CENTAURI. 01:38.565 --> 01:44.971 align:left position:72.5%,start line:83% size:17.5% JAMES: JOHANN BAYER USED GREEK LETTERS (ALPHA THROUGH OMEGA, AND THEN A THROUGH K TO LABEL 01:45.071 --> 01:48.007 align:left position:82.5%,start line:89% size:7.5% THE 35 MOST PROMINENT STARS IN BOOTES. 01:48.108 --> 01:51.111 align:left position:77.5%,start line:83% size:12.5% JOHN FLAMSTEED LATER INCREASED THIS NUMBER TO 54 STARS. 01:51.211 --> 01:55.548 align:left position:70%,start line:83% size:20% DEAN: GOOD LUCK FINDING ALL THOSE STARS WITHOUT A SUPER DARK SKY! 01:55.648 --> 02:00.753 align:left position:72.5%,start line:83% size:17.5% NEVERTHELESS, EIGHT OF THOSE STARS ARE EASILY VISIBLE TO THE NAKED EYE, AND THE SIX BRIGHTEST 02:00.854 --> 02:03.056 align:left position:87.5%,start line:89% size:2.5% ONES ARE EVEN VISIBLE FROM A CITY. 02:03.156 --> 02:06.192 align:left position:72.5%,start line:89% size:17.5% JAMES: THOSE STARS FORM A KITE-SHAPED PATTERN. 02:06.292 --> 02:13.366 align:left position:72.5%,start line:83% size:17.5% THEIR NAMES, TRAVELING COUNTER-CLOCKWISE FROM ARCTURUS ARE: RHO BOOTIS, SEGINUS, NEKKAR, 02:13.466 --> 02:16.136 align:left position:22.5%,start line:89% size:67.5% DELTA BOOTIS AND IZAR. 02:16.236 --> 02:21.241 align:left position:67.5%,start line:83% size:22.5% THE TWO STARS HANGING OFF EITHER SIDE OF ARCTURUS, MAKING A TAIL FOR THE KITE, ARE MUPHRID (TO 02:21.341 --> 02:24.577 align:left position:75%,start line:89% size:15% THE WEST) AND ZETA BOOTIS (TOWARD THE EAST). 02:24.677 --> 02:29.315 align:left position:75%,start line:83% size:15% DEAN: ARCTURUS GOT ITS NAME FROM AN ANCIENT GREEK WORD THAT MEANT GUARDIAN OF THE BEAR. 02:29.415 --> 02:34.521 align:left position:75%,start line:83% size:15% THIS MAKES SENSE SINCE THE CONSTELLATION OF BOOTES IS RIGHT NEXT TO URSA MAJOR, THE GREAT 02:34.621 --> 02:36.389 align:left position:42.5%,start line:89% size:47.5% BEAR. 02:36.489 --> 02:41.094 align:left position:72.5%,start line:83% size:17.5% JAMES: ARCTURUS IS ALMOST 37 LIGHT YEARS AWAY FROM US AND IS A RED GIANT STAR ABOUT 110 02:41.194 --> 02:42.962 align:left position:15%,start line:89% size:75% TIMES BRIGHTER THAN THE SUN. 02:43.062 --> 02:48.168 align:left position:77.5%,start line:83% size:12.5% IT IS ALSO ESTIMATED TO BE SLIGHTLY LARGER (MASS-WISE) THAN THE SUN, AND BETWEEN 6 BILLION 02:48.268 --> 02:50.069 align:left position:17.5%,start line:89% size:72.5% AND 8.5 BILLION YEARS OLD. 02:50.170 --> 02:54.507 align:left position:75%,start line:83% size:15% DEAN: POLYNESIAN NAVIGATORS CALLED ARCTURUS HO-KU-LEA, THE 02:54.607 --> 03:00.547 align:left position:72.5%,start line:83% size:17.5% STAR OF JOY. AND FROM HAWAII, ARCTURUS BECAME KNOWN AS THE ZENITH STAR, BECAUSE IT PASSES 03:00.647 --> 03:06.719 align:left position:70%,start line:83% size:20% ALMOST DIRECTLY OVERHEAD (AS SEEN FROM HAWAII), NEAR MIDNIGHT IN THE LAST FEW DAYS OF APRIL. 03:06.819 --> 03:12.659 align:left position:77.5%,start line:83% size:12.5% JAMES: AND IF YOU LIKE ASTERISMS, WE HAVE A SPRING TRIANGLE TO SHOW YOU, USING ARCTURUS, 03:12.759 --> 03:14.794 align:left position:27.5%,start line:89% size:62.5% REGULUS AND SPICA. 03:14.894 --> 03:17.497 align:left position:72.5%,start line:89% size:17.5% REGULUS IS THE BRIGHTEST STAR IN LEO THE LION. 03:17.597 --> 03:22.535 align:left position:77.5%,start line:83% size:12.5% YOU CAN FIND IT USING THE TWO STARS MEGREZ AND PHECDA, WHICH ARE IN THE BOWL OF THE BIG 03:22.635 --> 03:24.437 align:left position:12.5%,start line:89% size:77.5% DIPPER, CLOSEST TO THE HANDLE. 03:24.537 --> 03:28.841 align:left position:75%,start line:83% size:15% DEAN: BY DRAWING A LINE FROM MEGREZ THROUGH PHECDA, YOU WILL EVENTUALLY RUN INTO THE HEAD 03:28.942 --> 03:33.646 align:left position:75%,start line:83% size:15% OF LEO THE LION, WHICH RESEMBLES A BACKWARDS QUESTION MARK; THE DOT OF THE QUESTION MARK 03:33.746 --> 03:35.281 align:left position:35%,start line:89% size:55% IS REGULUS. 03:35.381 --> 03:39.919 align:left position:75%,start line:83% size:15% JAMES: THE NEXT STAR, SPICA, IS EASY TO FIND USING OUR ARC TO ARCTURUS TRICK. 03:40.019 --> 03:44.891 align:left position:75%,start line:83% size:15% BY CONTINUING THE LINE FROM THE BIG DIPPER'S HANDLE, THROUGH ARCTURUS, YOULL SPEED OVER 03:44.991 --> 03:47.594 align:left position:77.5%,start line:83% size:12.5% TO SPICA, THE BRIGHTEST STAR IN VIRGO THE MAIDEN. 03:47.694 --> 03:52.832 align:left position:75%,start line:83% size:15% DEAN: SO BY DRAWING A LINE FROM REGULUS, TO SPICA AND OVER TO ARCTURUS, YOU CAN MAKE THE 03:52.932 --> 03:54.167 align:left position:30%,start line:89% size:60% SPRING TRIANGLE. 03:54.267 --> 03:56.336 align:left position:87.5%,start line:89% size:2.5% NOW GRANTED, IT IS A BIG TRIANGLE. 03:56.436 --> 04:01.741 align:left position:75%,start line:83% size:15% JAMES: AND FOR YOU PLANET WATCHERS, JUPITER IS IN A GREAT LOCATION NOT FAR FROM SPICA. 04:01.841 --> 04:06.246 align:left position:75%,start line:83% size:15% IT IS JUST TO THE WEST OF SPICA AND THROUGH A SMALL TELESCOPE YOU CAN SEE ITS FOUR LARGEST 04:06.346 --> 04:09.983 align:left position:77.5%,start line:89% size:12.5% MOONS; IO, EUROPA, GANYMEDE AND CALLISTO. 04:10.083 --> 04:15.421 align:left position:72.5%,start line:83% size:17.5% DEAN: JUPITER AND EARTH WERE AT THEIR CLOSEST LAST WEEK, SO JUPITER SHOULD STILL LOOK IMPRESSIVE, 04:15.521 --> 04:17.390 align:left position:17.5%,start line:89% size:72.5% EVEN IN A SMALL TELESCOPE. 04:17.490 --> 04:22.795 align:left position:65%,start line:83% size:25% DEAN: SO, GET OUTSIDE AND CHECK OUT THE KITE-SHAPED CONSTELLATION OF BOOTES THE HERDSMAN WITH 04:22.895 --> 04:24.664 align:left position:17.5%,start line:89% size:72.5% ITS BRIGHT STAR ARCTURUS 04:24.764 --> 04:29.535 align:left position:77.5%,start line:83% size:12.5% JAMES: AND SEE IF YOU CAN SPOT THE SPRING TRIANGLE AND THE KING OF THE PLANETS, JUPITER! 04:29.636 --> 04:31.804 align:left position:77.5%,start line:83% size:12.5% DEAN: IT'S ALL THEIR WAITING FOR YOU WHEN YOU 04:31.904 --> 04:35.904 align:left position:22.5%,start line:89% size:67.5% BOTH: KEEP LOOKING UP!