Neil deGrasse Tyson explains how a solar eclipse happens

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>> TONY, WE'RE HERE IN YOUR HOUSE, THE HAYDEN PLANETARIUM. YES, THIS ACTUAL EVENT HAS GOT TO BE LIKE YOUR SUPER BOWL A LITTLE BIT, YOU KNOW, BECAUSE IT DOES ALL OF ITS OWN ADVERTISING HAD THE UNIVERSE IS ABOUT TO TALK TO US. THAT'S RIGHT. WITH A TOTAL SOLAR ECLIPSE. SO WHEN WE DESIGNED THE ROSE CENTER FOR EARTH AND SPACE, THERE'S A BIG FEAR, RIGHT? AND THERE'S A HUGE PLAZA HERE. THE AUTHOR ROSS TERRACE AND WE SAID, WHY DON'T WE HAVE THE PLAZA HAVE A RELATIONSHIP TO THE SPEAR? AND SO WHAT WE DECIDED WAS LET'S TURN THE PLAZA INTO AN ECLIPSE SHADOW, RIGHT? OKAY. SO RIGHT NOW WE ARE IN THE DARK IN PART OF THE SHADOW WHICH WILL HOLD THE UMBRELLA, THE UMBRA OMBRE ON. AND IT'S IT'S IT'S IT'S MORE FAMILIAR THAN YOU MIGHT THINK HUMBER MEAN SHADOW IN LATIN AND ANOTHER WORD. >> FROM THAT WAS AN UMBRELLA UMBRELLA. SO >> THE SPHERE, THE ILLUMINATED FROM FAR IN THE OTHER SIDE CAST A SHADOW THAT CONVERGES DOWN TO A POINT. RIGHT. AND WE ARE IN THE DARK IN THE GRANITE REPRESENTING THE UMBRA RIGHT NOW, THE PARTIAL FACE TOUGH WHEN THE MOON IS NOT COMPLETELY BLOCK THE SUN BUT STILL BLOCKING SOME OF IT, RIGHT? YOU KNOW, A LITTLE BIT OF A SHADOW, BUT NOT A COMPLETE SHADOW. YEAH, THAT'S CALLED UPEND HUMBER. WE REPRESENT THAT HERE, TOO. THAT'S THE DIFFERENT COLOR. GRANTED, IT'S LIKE A GREAT THIS DARK, RIGHT? THIS SORT OF MIDDLE GRAY COMING OFF ON EACH SIDE HERE. THAT'S THE PARTIAL SHADOW, RIGHT, THE PARTIAL ECLIPSE. AND THEN BEYOND THAT, THERE'S NO SHADOW IT ALL AND MISSES YOU COMPLETELY. AND THAT'S JUST THE BOWS THE WISCONSIN LAW HAS. SO HERE WE HAVE THE 3 PARTS OF THE SHADOWS, RIGHT CAPTURED IN THIS PLAZA. SO, OKAY. SO TALK ABOUT FOLKS WHO WILL BE IN THE PIN NUMBER. WHAT ARE SOME OF THE CITIES THAT WILL? WE'LL GET SOME OF THIS BUT NOT ALL. YEAH. SO WE DO. THIS IS THE 21ST CENTURY. PEOPLE HAVE CARS OR TRAINS, PLANES, AUTOMOBILES, JUST CAPTURE. SHE CENTER TOOK WHAT I SAID. WELL, HE'S GOING TO JUST JUST COME ON NOW COME AUGUST. THIS IS NOT 100 YEARS AGO, RIGHT WHERE WE'VE GOT A HORSE AND BUGGY. YEAH. AND THEIR LOT OF BIG CITIES. YEAH. IN THAT PATH THAT WE ALEX IS THE FIRST DALLAS IS A BIG ONE. INDIANAPOLIS. IF YOU ADD UP THE POPULATION CENTERS OVER WHICH THIS ECLIPSE WILL PASS, MORE PEOPLE MAY WITNESS THIS ECLIPSE THAT HAVE WITNESSED ANY THE CLIPS IN THE HISTORY OF CIVILIZATION. OH, MY GOSH. HE HAS SUCH CRAZY THE UNIVERSE AFFECTING WOUTER AND CIVILIZATION. >> WELCOME TO THE UNIVERSE. WOW. >> BEAUTIFUL. OKAY. I LOVE. HOW DOES THIS WORK? EXCEPT I LET ME GET A COUPLE OF WORDS TO BE RIGHT BACK. WE'RE GETTING OR UPSET. ALL RIGHT. WHAT YOU WANT TO EARTH? OK? HOLD ON EARTH. OKAY. OKAY. AND I GOT TO MOVE. OKAY. SO THESE ARE INCORRECT SIZE RELATIVE TO EACH OTHER. I DIDN'T REALIZE THE MOON WAS THAT BIG. WE ARE. WE'VE GOT A BAD. YOU ALL ARE ONE OF THE BIGGEST NAMES IN THE SOLAR SYSTEM. WOW, OK? SO HERE'S HOW IT WORKS. SO FIRST AND THE MOVE WAYS HAVE A SHADOW IN SPACE, RIGHT? ALLIES, ALL OF THAT FRONT. THE MOON'S ORBIT AROUND THE EARTH IS NOT ALWAYS LINED UP WITH THE SUN, OK? THAT'S TIPPED. SO HERE'S THE SHADOW. IT MISSES. THE ARE SURE OKAY BECOMES COULD BE DOWN HERE. THE SHADOW MISSES THE EARTH AGAIN EVERY NOW AND THEN EVERY COUPLE YEARS SOMEWHERE ON EARTH, THE SHADOW WE'LL COME RIGHT ON TO SERVE RIGHT HERE IN SPACE. SO THEN THE SUN, WHEN THE WAY WAS JUST PASSING BY WANT TO BE DEFINED? IT'S SO FUNNY, BECAUSE YOUR MAMA SAYS YOU'RE SO BRIGHT. THAT'S WHAT SHE CALLED. USAA, WHO EXACTLY. SO. SO WHEN THE SUN SHOULD BE JUST IN THE NICK OF TIME WORKING SO YOU LIT UP ON THE MOON IS LIT UP ON THE OTHER SIDE FROM EARTH. YOU CAN EVEN SEE THE MOVIE BECAUSE HE'S LIVE ON THE OTHER SIDE. BUT YOU CAN SEE THE SUN AND AS THE MOON ORBITS THE EARTH, IT BLOCKS THE SUNLIGHT. THAT'S PROBABLY ONE AREA WILL HAVE TOTAL BLACK IN ONE AREA AND IT MOVES ACROSS EARTH'S SURFACE. SO THAT'S WHY THE CLIP HAS A BEGINNING AND AN END. BUT HERE'S SOMETHING ELSE. THAT'S REALLY COOL. OKAY. OKAY. WHEN THAT ECLIPSE OCCURS, IT'S COMING ACROSS NORTH AMERICA, RIGHT? OK? SO THERE WE HAVE IT RIGHT THERE IN NORTH AMERICA. SO HERE'S THE MOON COMING AROUND THE BLOCKS. THE SUN, RIGHT? YOU CAN USE HAS TO STAY WHERE IT IS. YOU DON'T KNOW. MOVED. YOU DON'T MOVE MEMBER. YOU DO MOVE. OKAY. ALL RIGHT. ALL RIGHT. IF YOU WILL BE THE SUN, YOU'VE GOT LIGHT STATIONS. MANY OF THEM. HERE'S OUR ANCHOR. SO THE MOVE COMES, KNOW, WATCH. OKAY. THE EARTH IS ALSO ROTATING IN THE SAME DIRECTION. THE MOON IS GOING AROUND THE EARTH. SO WE WE SWEEP WE EXPERIENCE MORE ECLIPSE TIME THAN WE OTHERWISE WOULD BECAUSE WE'RE MOVING WITH THE SHADOW. THE SHOWERS GOING ABOUT 2000 MILES AN HOUR ACROSS ITS CRAZY FAST. AN ARREST AT THIS LATITUDE IS GOING ABOUT 800 MILES. I WASN'T REALLY A DARK, DARK DARK LIKE ART NYTIMES PARK. WHEN THIS COMES UP. WHEN IT'S IT'S NOT THE STARS COME OUT. THE PLANETS ARE IN VIEW AT ANIMAL START BEHAVING WEIRDLY, ESPECIALLY THE HUMANS, TOO NOT EVERYBODY IS GOING TO TOTAL BLACKNESS. IF YOU'RE IN THE PARTIAL SHADOWS CALLED UP AND I'M GOING TO GET IT WILL GET LIKE TWILIGHT. YEAH, NO, NO, NOT EVEN THAT DARK. 92 A LITTLE BIT OF SUN IS A LOT OF SOME A GOOD EXAMPLE. YOU CAN DO THE MATH. YOU CAN CHECK ME ON THIS. I WAS ABSOLUTELY IF YOU RESPOND TO, HE'S GOT ALL IF YOU ARE 99% COVERAGE, THE MOON COVERS 99% OF THE SOME ONE PERCENT SLIVER STILL REMAINS. THAT'S THE LIGHT EQUIVALENT OF 10,000 FULL MOONS. WOW. IF YOU'RE OUTSIDE OF THE SHADOW AND LOOKING AT THE SUN, DEFINITELY WANT TO WEAR THE GLASSES. IF YOU'RE IN THE PAN UMBRA THAT YOU WANT TO WEAR THE GLASSES BECAUSE THE SUN IS STILL SHINING BRIGHT, THE MOMENT THE SUN DISAPPEARS, THE THE MOON IS COMPLETELY COVERING IT. WANT TO COMPLETELY COVER. YOU TAKE OFF THE GLASSES IN BASKETS, THE UMBRA THAT YOU ARE IN THE NUMBER AND YOU CAN YOU CAN BASK IN THE GOAL ALL THE SOFT GLOW OF THE SOLAR CORONA, THE OUTER ATMOSPHERE OF THE SUN THAT YOU WOULD NOT NORMALLY SEE BECAUSE THE SUN, ITS OFFICE SO BRIGHT. SO IF YOU CAN MOVE A LITTLE BIT INTO THE TOTALITY, DO IT AND THEN IN A NATIONAL EVENTS HAPPENING LIKE A COMMENT WE DEEM. THANK YOU. THANK YOU. SO DURING TOTALITY TALLIED ABOUT 4 MINUTES TO TELL IF THAT'S WHAT IT TAKES WHEN THE SKY DARKENS, YOU SEE STARS, YOU SEE CONSTELLATIONS THAT YOU WOULD NORMALLY SEE 6 MONTHS AWAY FROM NOW YOU'LL SEE AUTUMN STARS IN THE SKY. WOW, 6 MONTHS OUT OF PHASE BECAUSE THEY'RE BLOCKED BY SUNLIGHT THESE DAYS. OKAY. SO YOU SEE THE NIGHT SKY, YOU'LL SEE PLANETS. THERE'S A COMMENT THAT IS VISIBLE IN THE SKY. >> RIGHT NOW WE'RE JUST A COMMENT THAT'S COLLOQUIALLY KNOWN AS THE DEVIL'S COM WHO BUT IT IS KIND OF PHOTO BOMBING THE ECLIPSE, RIGHT? IT'S JUST THAT WILL BE MANIFEST DURING DEEP ECLIPSE WHEN IT'S DARK ENOUGH TO BE NIGHT TIME. MOST PEOPLE WON'T EVEN NOTICE. BUT IF YOU KNOW, LOOK, IT'S THERE. IT'S A COMMENT. >> TALK ABOUT TAKING THE FINAL PLUS. OW. OW. >> EVEN THOUGH THEIR PLANETS AND COMETS AND STARS DOESN'T ECLIPSE GOING TO, I'M GOING TO LOOK AT WHAT I'M LOOKING TO BE CLEAR. THAT'S WHAT THAT'S WHAT WE'RE HERE FOR. YES. SO WE TALK IT THROUGH THE FINAL MOMENTS. OKAY. THE PARTIAL PHASES. >> SO THE SUN GETS SKINNIER AND SKINNIER AND SKINNIER AND THE CRESCENT GETS THINNER AND THINNER. IT STARTS GETTING THE REALLY DARK. >> DESCENDS UPON THE LAND. AND IN THAT LAST MOMENT, SOME LIGHT ONLY PEERS THROUGH THE MOUNTAINS AND VALLEYS OF THE SURFACE OF THE MOON. AND AS IT DOES THAT THERE'S SOMETHING CALLED BAILY'S BEADS LAST JUST SECONDS. JUST SECONDS. THE CALL BEADS BECAUSE IT'S JUST SOME LIGHT APPEARING THROUGH MOUNTAIN TOPS. IT WAS A LITTLE BIT OF SOME LIKE THEY'RE ON THE WIDER BE OVER THERE, DEPENDING ON THE HOW THE MOUNTAINS ARE SPREAD. IT WAS CALLED BILLY SPEEDS. IT'S A IT'S A FUN MOMENT WHEN THE LAST BIT OF SUN REMAINS TO BE HIT BEAM OF LIGHT. BUT YOU CAN STILL SEE THE REST OF THE ECLIPSE TAKING SHAPE. IT LOOKS EXACTLY LIKE A DIAMOND RING AND WE CALL IT THE DIAMOND RING EFFECT. THEN YOU DESCEND INTO DARKNESS THOSE LAST FEW MONTHS. SECONDS SECONDS. YOU CAN TAKE OFF YOUR GLASSES AND WATCH THAT HAPPEN. HOW BEAUTIFUL. AND THEN THE WHOLE THING REPEATS IN REVERSE. YOU GET THE BAILY'S BEADS. THE DIAMOND RING ON THE EXIT. YOU GET THIS THE THIN CRESCENT AND THEN THE MOON MOVES OFF THE SURFACE OF THE SUN. PUT THOSE GLASSES BACK. THEN YOU PUT THE GLASSES BACK ON. BUT IMAGINE. >> IF THE MOON'S ORBIT WERE IN THE PLANE OF EARTH'S ORBIT AROUND THE SUN, IF THAT WERE THE CASE, THEN EVERY NEW MOON, YOU HAVE A TOTAL SOLAR ECLIPSE AND EVERY FULL MOON, YOU HAVE A LUNAR ECLIPSE. SO IT WOULD HAPPEN EVERY MONTH. >> WHY PEOPLE JUST GET BORED BY MY PAWS. OH, THAT'S NICE. BUT LET'S KEEP GOING. LET'S GO GET A SANDWICH. SO SO BECAUSE THINGS DON'T ALWAYS ALIGN. IT LENDS TO THE RARITY OF THE EVENT AND THE SPECIALNESS OF THE EVENT, WHICH IS WHY COUNTLESS MILLIONS OF PEOPLE ASSEMBLE WHEN THERE'S AN ECLIPSE SUPER WANT TO BE TOGETHER. THEY WANT TO BE TOGETHER AND SHARE A COSMIC PHENOMENA TOGETHER. THEY TELL YOU A LITTLE OF MY FAVORITE SENTENCE EVER COMPOSED CHART THE SPENDING PLANETS ORBIT THE SUN ALONG THERE, A POINT TO PASS LIKE PURE WINNING DANCERS AND A COSMIC BALLET BY THE FORCES ARE GRAPHIC. >> I JUST I THINK HE'S MARKING
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Channel: NBC News
Views: 236,928
Rating: undefined out of 5
Keywords: NBC News NOW
Id: 6qDD8JaEX9M
Channel Id: undefined
Length: 10min 59sec (659 seconds)
Published: Wed Apr 03 2024
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