Sleeping in Space

It’s bedtime on the ISS. CSA Astronaut Chris Hadfield shows us how astronauts sleep in space. Credit: Canadian Space Agency/NASA

For more about sleeping in space, see: http://www.asc-csa.gc.ca/eng/astronauts/living_sleeping.asp

The Beginning of the Universe, for Beginners

How did the universe begin — and how is it expanding? CERN physicist Tom Whyntie shows how cosmologists and particle physicists explore these questions by replicating the heat, energy, and activity of the first few seconds of our universe, from right after the Big Bang.

Lesson by Tom Whyntie, animation by Hornet Inc.

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Astronaut’s video from the Space Station shows how shedding tears in zero gravity really DOES hurt

Canadian astronaut Chris Hadfield continued his series of fascinating videos detailing how much different ordinary life is in zero gravity with a new tutorial explaining what happens when you cry in space.

An Internet sensation, Hadfield’s stunning daily pictures of Earth from orbit regularly go viral online, as have his videos explaining everything from how to brush your teeth in zero gravity to nail clipping to washing your hands.

Hadfield posted his latest video after tweeting that crying in space hurt.’Your eyes make tears but they stick as a liquid ball,’ he wrote. ‘In fact, they sting a bit. So — space tears don’t shed.’

To illustrate what he meant, Hadfield got a bottle of water and turned on his camera.

‘I can’t cry on command, But I’m going to take some drinking water and put it in my eye as if I was crying and see what happens,’ Hadfield said as he introduced the new video.Hadfield then squirted some fluid into his eye, which stayed there just as he predicted.

‘You see it just forms a ball on my eye,’ he said. ‘So if you keep crying you just end up with a bigger and bigger ball of water in your eye, until eventually it crosses across your nose and gets into your other eye, or evaporates, or maybe spreads over your cheek, or you grab a towel and dry it out.’As Hadfield shook his head from side to side, the blob of water clung to him.

‘Your eyes will definitely cry in space,’ he said. ‘But the big difference is tears don’t fall. So grab a hankie.’

Canadian astronaut Chris Hadfield took the helm of the International Space Station on Wednesday March 13th, marking only the second time in the outpost’s 12-year history that command has been turned over to someone who is not American or Russian.

CSA Presents: The Hadfield Shake - Exercise on the ISS

To maintain their bone and muscle mass, astronauts need to work out two hours every day. CSA Astronaut and ISS Commander Chris Hadfield shares his workout routine with us, from cardio on the T2 treadmill, to muscle and bone mass maintenance on the ARED (Advanced Resistive Exercise Device). (Credit: CSA/NASA)

To find out more about exercising in space, go to: www.asc-csa.gc.ca/eng/astronauts/living_exercising.asp

Chris Hadfield Brushes his Teeth in Space

Canadian astronaut and Commander of Expedition 35 demonstrates how astronauts brush their teeth in space. You might be surprised by what he reveals!

To learn more about hygiene in space, check out: www.asc-csa.gc.ca/eng/astronauts/living_hygiene.asp

What If The Sun Disappeared?

Science time.

10 Amazing Facts About The Sun

Catch some rays of knowledge with these 10 amazing facts about the sun.

Music: Apollo Rising by Terry Devine-King

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