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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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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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American kids today dream of being vloggers, not astronauts

The dream of space travel has been usurped by superficiality.

  • Recent survey of 3,000 kids showed that more kids aspire to be a YouTube star than an astronaut.
  • Children in the U.S. and U.K. were three times more likely to want to become vloggers than kids in China.
  • The survey also indicated that kids in America were less knowledgeable about space travel than their global counterparts.
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Credit: NASA
  • NASA's new plan will span the next 10 to 20 years.
  • First, the Moon, and things around the Moon. Then, Mars.
  • One of the primary goals? To privatize and get industry to eventually fund all of it.
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Why space garbage is more lethal than a bullet

Trash on earth is pretty bad. But space trash is at a whole other level.

Trash on earth is pretty bad. But space trash is at a whole other level. Imagine how much damage just a single screw can make when it's hurtling right at you at 17,500mph. You can follow Michelle Thaller on Twitter at @mlthaller.

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How a spaceship the size of a postage-stamp could find humanity’s new home planet

Sending a tiny spaceship to the nearest habitable planet at 20% of the speed of light? No problem, says theoretical physicist Michio Kaku.

Theoretical physicist Michio Kaku doesn't just hope that humanity finds its way onto other planets... he's even picked out the ones we should be moving to — Proxima Centauri B, in the Alpha Centauri triple star system. He's even suggested that the next great space exploration could happen on a spaceship the size of a postage stamp, traveling 20% the speed of light, sent by using high-powered lasers. It sounds like a wild theory, but if anyone's wild theories could come true in the next 100 years, it's probably Michio Kaku. His latest book is The Future of Humanity: Terraforming Mars, Interstellar Travel, Immortality, and Our Destiny Beyond Earth.

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