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Neil DeGrasse Tyson: Is This Thing A Spaceship?

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Jan 06, 2018

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Neil DeGrasse Tyson: Is This Thing A Spaceship?
Neil DeGrasse Tyson: Is This Thing A Spaceship? thumb Neil DeGrasse Tyson: Is This Thing A Spaceship? thumb Neil DeGrasse Tyson: Is This Thing A Spaceship? thumb

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  • >> Stephen: BACK, EVERYBODY.
  • WE'RE HERE WITH OUR FRIEND NEIL DEGRASSE TYSON.
  • LET'S TALK ABOUT SOMETHING SMALLER IN A WAY BUT IN SORT OF
  • MENTALLY, ANOTHER THING THAT WILL KEEP YOU UP AT NIGHT AND
  • KIND OF MAKE YOUR BRAIN EXPLODE IS--
  • >> YOU KNOW, I'M SCARED WHEN YOU PULL STUFF OUT.
  • >> Stephen: LIKE THIS?
  • YOU KNOW WHAT THIS IS.
  • >> OH, YEAH, YEAH, YEAH.
  • >> Stephen: SO RECENTLY INTO OUR SOLAR SYSTEM, ABOVE THE--
  • WHAT'S IT CALLED, THE PLANE OF THE ECLIPTIC?
  • >> SURE.
  • >> Stephen: WHERE THE PLANETS GO AROUND FROM ABOVE OR BELOW,
  • OR WHATEVER, OFF THE AXIS OF WHERE THE PLANETS GO AROUND.
  • >> PLANETS DO THIS AROUND THE SUN.
  • >> Stephen: THIS CAME FROM DEEP SPACE.
  • >> FIRST TIME EVER AN OBJECT FROM INTERSTELLAR SPACE HAS BEEN
  • OBSERVED TO VISIT OUR SOLAR SYSTEM.
  • >> Stephen: NOW, THIS THING'S GOT TO BE LIKE A SHIP, RIGHT?
  • THAT LOOKS TOO MUCH LIKE A SPACESHIP.
  • >> THIS IS NOT A PHOTOGRAPH.
  • >> Stephen: WHAT?
  • >> THIS IS AN ARTIST'S RENDERING.
  • WE KNOW IT'S ELONGATED-- I DON'T BELIEVE--
  • ( LAUGHTER ) JUST --
  • >> Stephen: YOU DON'T GET TO TAKE-- WHAT ABOUT THAT ONE RIGHT
  • THERE?
  • YOU HOLD IT WHATEVER-- >> YOU GOT PEOPLE.
  • YOU GOT PEOPLE -- >> Stephen: I GOT PEOPLE.
  • LOOK AT THAT BUT IT LOOKED LIKE THAT.
  • >> NO.
  • >> Stephen: IT WAS ELONGATED.
  • >> CIGARS DON'T COME JOURNEYING INTO SOLAR SYSTEM S.
  • >> Stephen: WHICH IS WHY IT HAS TO BE AN ALIEN SPACESHIP.
  • >> SO, SO-- ( LAUGHTER )
  • >> Stephen: YEAH?
  • >> ASTEROIDS WE KNOW, MANY OF THEM, IN NOT MOST OF THEM ARE
  • LOOSELY HELD TOGETHER RUBBLE PILES, AND IF THEY COME NEAR
  • GRAVITATIONAL SOURCES, TIDAL FORCES CAN STRETCH THEM SO THEY
  • BECOME A STREAM OF PART NELS RATHER THAN ONE SOLID MASS.
  • >> Stephen: THIS IS NOT SOLID?
  • >> IT IS LIKELY NOT SOLID.
  • >> Stephen: WHAT IS IT?
  • >> BUT THE SIGNAL WE GET FROM IT IS ELONGATED, BUT IT'S PROBABLY
  • A RUBBLE PILE STRETCHED INTO THAT SHAPE.
  • BECAUSE YOU DON'T GET THAT BY NATURE.
  • YOU DON'T GET THAT.
  • >> Stephen: YEAH, THAT'S WHY IT'S MANMADE.
  • >> ALIEN.
  • >> Stephen: ALIEN MADE.
  • >> YOU WANT THAT TO BE ALIENS.
  • FESS UP-- YOU WANT THAT TO BE ALIENS.
  • >> Stephen, OF COURSE, I WANT THAT TO BE ALIENS!
  • THAT'S THE WHOLE POINT OF THIS QUESTION THAT I'VE NEVER
  • FINISHED.
  • ( LAUGHTER ) >> HERE'S THE PROBLEM-- HERE'S
  • THE PROBLEM, THIS THING CAME IN MOVING FAST.
  • >> Stephen: YEAH.
  • >> IT HAS ESCAPE VELOCITY, HYPERBOLIC ORBIT, HYPERBOLIC
  • TRAJECTORY, WE SAY "HYPER."
  • IT'S GOT MORE ENERGY.
  • >> Stephen: THAN A BOLIC.
  • >> IT'S PARABOLIC, FOR EXAMPLE.
  • SO, SO, THE REASON WHY IT'S PROBABLY NOT ALIEN ALIENS IS ITS
  • TRAJECTORY AROUND THE SUN WAS COMPLETELY DETERMINED BY
  • GRAVITATIONAL FORCES.
  • >> Stephen: HOW DO YOU KNOW?
  • >> BECAUSE BEE KNOW.
  • WE CALCULATE THIS.
  • THERE ARE LAWS OF GRAVITY, LAWS OF PHYSICS.
  • >> Stephen: LOOK, SEE THIS, SEE THAT?
  • THAT TRAJECTORY WAS COMPLETELY CONTROLLED BY GRAVITATIONAL
  • FORCES AFTER IT REACHED ITS PEAK UP HERE AND CAME BACK DOWN, AND
  • YET A THINKING CREATURE STARTED THE PROCESS, OKAY.
  • IT DOESN'T MEAN-- IF THIS CAME IN AND YOU GO, "OH, GRAVITY DID
  • THAT."
  • BUT SOMEBODY MADE IT GO TO HERE.
  • CHECKMATE!
  • ( CHEERS AND APPLAUSE ) PARABOLIC!
  • PARA-BOLLIC GLIEWD #.
  • >> Audience: STEPHEN!
  • STEPHEN STEPHEN!
  • STEPHEN!
  • STEPHEN!
  • ( CHEERS AND APPLAUSE ) >> Stephen: THAT, MY FRIEND,
  • IS CALLED A TASTE OF YOUR OWN MEDICINE.
  • >> ALL I'M SAYING IS IF IT'S ONLY MOVING BY THE FORCE OF
  • GRAVITY, THEN IT'S NOT-- WE PRESUME IT DOESN'T HAVE, LIKE,
  • ROCKETS AND THINGS.
  • IF THIS WERE ALIENS.
  • >> Stephen: YEAH.
  • >> IN SOME KIND OF ADVANCED SHIP IT WOULD BE MAWFERG, DOING
  • INTERESTING THING.
  • >> Stephen: MAYBE IT MANEUVERED ON ITS WAY IN, A PASS
  • AROUND THE SUN, THE WAY THEY USE SATELLITES TO GO AROUND THE BACK
  • OF A PLAN TOTE WHIP THEM AROUND OUTER SPACE.
  • >> IT'S CALLED THE SLINGSHOT EFFECT.
  • >> Stephen: YOU DON'T HAVE TO TELL ME.
  • >> SO, MAYBE THE ALIENS SHUT OFF THEIR ENGINES TO MASQUERADE AS A
  • COSMIC OBJECT TO GET A SLINGSHOT EFFECT AROUND OUR STAR.
  • >> Stephen: MAYBE WE CAN'T PERCEIVE WHAT THEIR ENGINES ARE
  • AND THEY HAVE A MODE-- >> I CAN JUST TELL YOU THEY'RE
  • OFF.
  • ( LAUGHTER ) WHATEVER THEY ARE, THEY'RE OFF,
  • BECAUSE IT'S-- BECAUSE A TENNIS BALL WOULD HAVE THAT TRAJECTORY
  • MOVING AT THAT SPEED.
  • THAT'S ALL.
  • >> Stephen: IS THERE ANY CHANCE?
  • >> NOT -- >> Stephen: THAT THAT'S A
  • TENNIS BALL?
  • >> NO.
  • ( LAUGHTER ) NO, AND BY THE WAY, BIG NEWS WAS
  • THAT THE PENTAGON, WAS TRACKING UFOs.
  • >> Stephen: RIGHT, WE SAW THE FOOTAGE.
  • THEY RELEASED THE FOOTAGE FROM LIKE, F-18 FIGHTER PILOTS ON
  • THEIR SCOPE, TABLET-SHAPED THING, ACCEL RATHE, STOPPING,
  • ACCEL RATHE IN THINGS THEY CAN'T EXPLAIN.
  • >> THAT HAS A WAY BETTER CHANCE OF BEING ALIENS THAN THIS.
  • THOSE OBJECTS WERE DOING THINGS THAT WERE NOT DPRAFITATIONAL.
  • >> Stephen: DO YOU THINK THEY'VE GOT SOMETHING THERE?
  • >> I DON'T KNOW.
  • HENCE THE "U" IN UFO.
  • >> Stephen: I'M WITH YOU.
  • I'M ON BOARD.
  • >> ARE YOU GOING TO SAY-- ARE YOU GOING TO SAY-- THIS IS A
  • UFO, I DON'T KNOW WHAT IT IS, THEREFORE, IT'S INTELLIGENT
  • ALIENS FROM OUTER SPACE.
  • YOU SAID YOU DON'T KNOW WHAT IT IS.
  • YOU CAN'T BE CERTAIN OF ANYTHING.
  • >> Stephen: I'M HOPING.
  • >> I'M HOPING, TOO.
  • I WANT TO MEET THE ALIENS.
  • BY THE WAY, IF YOU EVER MEET THE ALIENS, THEY TAKE YOU ON BOARD,
  • FIRST, TAKE SOME PHOTOS, FIRST.
  • SECOND, WHEN THEY DO THE SEX EXPERIMENTS ON YOU, OKAY--
  • ( LAUGHTER ).
  • >> HERE'S WHAT YOU DO-- ( LAUGHTER )
  • THAT'S WHAT THEY DO.
  • WE ALL KNOW THAT.
  • >> Stephen: DON'T YOU HAVE TO CHECK A BOX TO, LIKE, OPT IN TO
  • THAT.
  • >> HERE'S WHAT YOU DO, HERE'S WHAT YOU DO-- TELL THE ALIEN--
  • SAY, "OH, LOOK OVER THERE," AND QUICKLY SNATCH SOMETHING OFF THE
  • SHELF LEAK AN ASH TRAY OR SOMETHING AND PUT IT IN YOUR
  • POCKET AND LAY BACK ON THE SLAB.
  • THEN WHEN THEY LET GO OF YOU, YOU HAVE SOMETHING OF ALIEN
  • MANUFACTURE.
  • >> Stephen: SO IN THIS SCENARIO, THE ALIENS SMOKE?
  • >> YES.
  • >> Stephen: IF I SEE THEM, I WILL GIVE THEM THIS, WHICH IS
  • YOUR BOOK "NEIL DEGRASSE TYSON, ASTROPHYSICS FOR PEOPLE IN A
  • HURRY."
  • A "NEW YORK TIMES" BESTSALER FOR 34 WEEKS.
  • >> CRAZY, CRAZY.
  • >> Stephen: EXTRAORDINARY.
  • >> I'M DELIGHTED APPETITE IS OUT THERE.
  • MAYBE IT OPPOSE DOORS FOR MANY MORE SCIENCE BOOKS TO APPEAR
  • THERE.
  • >> Stephen: DO YOU HAVE A FAVORITE THING?
  • >> OH!
  • MAY I?
  • >> Stephen: IT'S YOUR BOOK, MAN.
  • IT'S YOUR BOOK.
  • >> OH, MAY I?
  • >> Stephen: SURE.
  • >> SO REFLECTIONS ON THE COSMIC PERSPECTIVE.
  • THE WORDS I'M ABOUT TO READ ARE NOT MINE.
  • THEY'RE BY JAMES FERGUSON, A PHYSICIST FROM THE 1700s.
  • IF I MAY.
  • >> Stephen: YOU MAY.
  • ( LAUGHTER ) >> Stephen: OKAY.
  • >> FIMAY.
  • >> Stephen: I'LL GET YOU A GLASS OF MEADE.
  • >> JAMES FERGUSON, 1757.
  • "OF ALL THE SCIENCES CULTIVATED BY MANKIND, ASTRONOMY IS
  • ACKNOWLEDGED TO BE AND UNDOUBTEDLY IS THE MOST SUBLIME,
  • THE MOST INTERESTING, AND THE MOST USEFUL, FOR BY KNOWLEDGE
  • DERIVED FROM THIS SCIENCE, NOT ONLY THE BULK OF THE EARTH IS
  • DISCOVERED, BUT OUR VERY FACULTIES ARE ENLARGE WITH THE
  • GRANDEUR OF THE IDEAS IT CONVEYS.
  • OUR MINDS EXALTED ABOVE THEIR LOW, CONTRACTED PREJUDICES."
  • ( CHEERS AND APPLAUSE ) ♪ ♪ ♪
  • >> Stephen: 34 WEEKS.
  • I CAN'T WAIT TO SEE YOU FOR 10.
  • LET'S MAKE IT AN EVEN TWO DIGITS.
  • >> OKAY.
  • >> Stephen: "ASTROPHYSICS FOR PEOPLE IN A HURRY" IS AVAILABLE
  • NOW, AND "STAR TALK" IS ON NAT- GEO SUNDAYS.

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Description

Astrophysicist and 'Astrophysics for People in a Hurry' author Neil deGrasse Tyson explains the science behind the first observed interstellar object to visit our universe (which Stephen knows is full of aliens).

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