Chris Hadfield on how the body adapts to weightlessness

2013-02-20 - Canadian Space Agency Astronaut Chris Hadfield took part in today's NASA Social event, which featured a live video stream from the International Space Station to NASA headquarters in Washington, DC. Hadfield describes how the body adapts to weightlessness.

Credits: Canadian Space Agency and NASA

[ElegeantFencer]

1:04 The camera man must've been really bored and for no reason felt like filming one of the reporters texting.

[CWVproduction]

why the hell did they feel the need to show the guy texting from 1:06 to 1:15??

[aiqbal]

Love the way he talks...such a polite guy, truly a class act. Represents Canadians very well.

[RobPanico]

1:13 "damn these Angry Birds!"

[Kendijs]

I'm not Canadian but I'm so proud of these guys. Mindblowing what humanity has achieved and what we have in front of us.

[HilaryPea]

Thank you for taking her question seriously. It is a good and fair on, even if it does make some of us chuckly a little, good-naturedly.

[Nayhayyy]

I SERIOUSLY FREAKING LOVE THIS GUY! I THINK EVERYONE LOVES HIM!

HEY COMMANDER, LOTS OF LOVE FOR YOU HERE ON PLANET EARTH :D

[System-ruyt]

i've watched so many of these videos that sometimes i forget that there is still gravity for a few seconds and i think i can fly its really weird but its funny

[jewelpeter]

whenever we do the review in the program, we find a completely different need, and it was a wonderful need for each

[UCGhyYYLRLirWIvhvxng]

"I'm Commander Hadfield, and this is my favorite space station on Earth's orbit."

[colinross]

Thank you for your beautiful pictures, and also your ambition that space travel should become more ordinary. Once that happens, perhaps our leaders might understand how small and fragile our home planet is, and how important it is for us to work together to conserve our lovely home.

[alekshandru]

Yeah, reporter typing on an iPhone exclusive reportage on how the body adapts in space to weightlessness and if will fat people will ever be able to travel to space.

[CanDoTina]

Commander Hadfield, because of your efforts, and your Crew - We are able to grow Together in the Most Important aspect of Life down here on Our Planet Earth and that is Knowledge. Words will never be able to describe the emotion of gratitude nor will History books be able to relay in proper terms, but I just wanted you to know now that you will forever be Our Hero. Love and light. ~tina marie ♥

[MrThedashman]

1:50 he knows that we are watching him hahaha

[skirossi]

Weight is defined as the force of gravity on mass (w = m * g, where w is weight, m is mass, and g is acceleration due to gravity). In space, acceleration due to gravity is essentially 0, so a person's weight would also technically be 0, however in physics they say "unweighable". Mass, on the other hand, always remains constant regardless of gravity because it is a measure of matter. A person who has a mass 150kg on Earth will also have a mass of 150kg on the moon or in space.

[SergioSource]

He is getting notes. Doing what reporters do.

[Ericer]

I would go into space just to fly around, seems so fun xP

[Specterish]

You know... After watching these videos, I'm suddenly really conscious of gravity...

[LZmiljoona]

He is just posting on Facebook that he is so excited to talk to Chris.

[dennyfader]

I can't imagine Chris NOT floating around without gravity...