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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Astrophysicists discover exotic merger of black holes

Gravitational wave researchers observe black holes of different sizes colliding for the first time.

Simulation of two black holes of different size orbiting each other, while emitting gravitational waves. Blue colors are weaker gravitational radiation and red is stronger.
  • Gravitational wave researchers at LIGO and Virgo observatories spot black holes of different sizes colliding.
  • The finding is unusual because previous black hole mergers involved partners of similar size.
  • The new information re-confirms Einstein's theory of relativity.
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Long spaceflights change astronauts' brain structure, new study suggests

The changes in brain structure aren't the only bodily changes caused by zero gravity.

Photo by NASA via Getty Images
  • A new study finds that long term weightlessness can cause changes in brain structure, with an increase in white matter lasting a year after returning to Earth.
  • The researchers believe it to be caused by an increase in fluid pressure on the brain.
  • Potential solutions include creating artificial gravity.
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Scientist figures out how to move our sun to avoid space collisions

An astrophysicist proposes new designs for stellar engines that can move a solar system.

Credit: CapnHack, via energyphysics.wikispaces.com.
  • An astrophysicist proposes two new designs for stellar engines.
  • The engines would be able to move our sun and whole solar systems.
  • Moving the sun would be necessary to avoid collisions with supernovas and other space catastrophes.
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Scientists race to use zero gravity to kill the worst cancers

A 2020 space mission wants to use zero gravity to disable some of the hardest cancers to fight.

Left: U.S. Air Force photo/Heidi Hunt). Right: Source Dr. Raowf Guirguis. National Cancer Institute
  • An Australian research mission, launched in 2020 by Elon Musk's SpaceX, will study effects of zero gravity on four cancers.
  • Other missions with similar objectives are set to launch in 2022 aboard the new China Space Station.
  • In earlier experiments, scientists found that microgravity can kill cancer cells.
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