We know what gravity is, well although space is gravity free, (you see the space ships with the astronauts floating around).

We have often seen pictures of astronauts floating around inside the space shuttle, International Space Station or Mir.

Among the ornate carvings on the façade is the incongruous likeness of an astronaut floating in space.

I've seen astronauts floating along through the void, untethered-live.

To an astronaut floating a few hundred yards away, the Pebbles would have looked comical.

Mr. Deluccy said: "You see those pictures on television of the astronauts floating around space without gravity?

"She was like some astronaut floating in space," said one.

The trippy pictures of astronauts floating against the blackness of the universe and standing among the wastes of the moon somehow justified the billions spent.

As with astronauts floating in free fall, motions had to be deliberate and unexaggerated.

One of the last images he remembers seeing before going blind at the age of 6 was of an astronaut floating in space.