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David Goggins
Former Navy Seal
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Bryan Cranston
Actor
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Liv Boeree
International Poker Champion
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Amaryllis Fox
Former CIA Clandestine Operative
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Chris Hadfield
Retired Canadian Astronaut & Author
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3 scientists school flat Earthers on the evidence

Can this end flat-Earth theory once and for all?

  • Despite centuries of evidence proving otherwise, there are an alarming number of people around the world who genuinely believe that the earth is flat. Bill Nye The Science Guy, NASA astronomer Michelle Thaller, and Neil deGrasse Tyson strongly disagree.
  • From simple experiments like standing at a seashore or looking through a telescope at other planets, to reading about navigation or viewing photos of Earth taken from space, the scientists share several ways that flat Earthers can see the truth for themselves.
  • Tyson explains why this trend doesn't qualify as a scientific debate and why it is actually dangerous for people to believe and, even worse, pass on these objectively false ideas.

Experiment proves old theory of how aliens might use black holes for energy

Researchers create a device to test a 50-year-old physics theory from the famed Roger Penrose.

Credit: NASA/CXC/M.Weiss
  • Scientists prove a 50-year-old physics theory by Roger Penrose.
  • The theory explains how energy could be harvested from black holes by advanced aliens.
  • Researchers from the University of Glasgow twisted sound waves to show that the effect Penrose described is real.
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Why we can stop worrying and love the particle accelerator

By delving into the mysteries of the Universe, colliders have entered the Zeitgeist and tapped the wonders and fears of our age.

Peter Macdiarmid/Getty Images
What would happen if you stuck your body inside a particle accelerator?
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How does gravity bend spacetime?

Time travel is possible, but only in one direction.

  • We typically think of events as happening in space and in time. "In reality, space and time are strongly intertwined things and the union of them is called spacetime," explains Konstantin Batygin.
  • The force that we understand as gravity, according to Batygin, is the result of the spacetime continuum being curved by Earth's gravitational field. Depending on how close you are to the source of gravity, time will pass at different rates.
  • Traveling backward in time is not possible. Traveling forward through time without aging, however, would require going to the center of the planet where the effects of that gravitational field can't be experienced.
For more from Batygin, visit konstantinbatygin.com.

3 mind-blowing space facts with Neil deGrasse Tyson

Tyson dives into the search for alien life, dark matter, and the physics of football.

  • Astrophysicist Neil deGrasse Tyson joins us to talk about one of our favorite subjects: space.
  • In the three-chaptered video, Tyson speaks about the search for alien life inside and outside of the Goldilocks Zone, why the term "dark matter" should really be called "dark gravity," and how the rotation of the Earth may have been the deciding factor in a football game.
  • These fascinating space facts, as well as others shared in Tyson's books, make it easier for everyone to grasp complex ideas that are literally out of this world.
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