Orbital Velocity Quotes

Planets move in ellipses with the Sun at one focus.

If there is a small rocket on top of a big one, and if the big one is jettisoned and the small one is ignited, then their speeds are added.

We're on the same radius from the Earth, and then we start to swing around to where we're ahead of them on the velocity vector, so we come in relative to the station from this forward velocity position and dock on to the forward end of the Lab.

Glenn must think he's still in space. He's orbiting the issues faster than he orbited earth.

Did I think about the risks? Of course I did. Anyone who says otherwise is not being completely honest. The amount of energy it takes to bring a spacecraft to orbital speed, and the forces it endures on re-entry, makes risk impossible to avoid.

What's aero braking? That's a way to use the gravity and upper atmosphere of Earth to sling shot a ship out either deeper into space, or slow it down to be 'captured' by Earth's gravity.

The moon gravitates towards the earth and by the force of gravity is continually drawn off from a rectilinear motion and retained in its orbit.

Looking down at the Earth, you started to pick up a sense of speed much more than I had noticed on orbit.

You're going very fast when you're on orbit, going around the world once every hour and a half.

Because we were orbiting the earth faster than earth spins on its axis, we went around the earth 16 times a day, an earth day, which meant 16 periods of lightness and 16 periods of darkness in 24 hours. Every so often you'd look towards the earth, and often you could see lightness and darkness together, and dawn and sunset were spectacular.

The radius vector describes equal areas in equal times.

Being outside during the space walk, the view of the Earth is just spectacular, and getting a chance to do that is just unbelievable, everything about it. You are going around the Earth at 17,500 miles an hour, so you have 45 minutes of sunlight followed by 45 minutes of darkness. You do a lap every 90 minutes.

What's the orbital velocity of the moon?

We will be producing supersonic planes which will go far, far faster than Concordes. New York to Tokyo could be less than an hour. You could be traveling at 19,000 miles an hour orbitally.