Your arms don't hang by your side in space like they do on Earth because there is no gravity. It feels awkward to have them floating in front of me. Scott Kelly armawkwardearth Change image and share on social
The lunar flights give you a correct perception of our existence. You look back at Earth from the moon, and you can put your thumb up to the window and hide the Earth behind your thumb. Everything you've ever known is behind your thumb, and that blue-and-white ball is orbiting a rather normal star, tucked away on the outer edge of a galaxy. Jim Lovell backballblue share on social
I don't think the human race will survive the next thousand years, unless we spread into space. Stephen Hawking humanracespace Change image and share on social
There are thousands of asteroids whose orbit in the Solar System crosses that of Earth. And we have a little acronym for them - NEOs: near Earth objects. And our biggest goal is to try to catalogue them, so we know in advance if one is going to put us at risk. Neil deGrasse Tyson acronymadvanceasteroid share on social
We'd never have got a chance to go outside and look at the earth if it hadn't been for space exploration and NASA. James Lovelock chanceearthexploration Change image and share on social
Mental communication without verbalization... all space is made up of waves and we are constantly sending and receiving messages from our brain. Tina Louise braincommunicationconstantly Change image and share on social
Science has taught us, against all intuition, that apparently solid things like crystals and rocks are really almost entirely composed of empty space. And the familiar illustration is the nucleus of an atom is a fly in the middle of a sports stadium, and the next atom is in the next sports stadium. Richard Dawkins apparentlyatomcompose share on social
People come up to me and say, 'It's too bad the space program got canceled.' This is not the case, and yet that is what most of the public thinks has happened. Buzz Aldrin badcanceledcase Change image and share on social
My father was always very interested in space. I watch Star Trek and all those things, but I always had a different picture in my mind... maybe closer to Alien. I don't see it in space as much as I do see it in different planets, with each having its own strange characters. Sigourney Weaver aliencharacterclose share on social
The Next Generation Space Telescope, which will be located much further away from the Earth than the Hubble Space Telescope presently is, will also explore the infrared part of the spectrum. Claude Nicollier earthexploregeneration Change image and share on social