Sentence examples for orbital speed from inspiring English sources

For a solar sail directly facing the sun in a bound orbit, the Poynting Robertson effect decreases its orbital speed, thereby causing it to slowly spiral towards the sun.

If the accretor is a normal main-sequence star, the orbital speed is hundreds of kilometres per second.

Chemical rockets would still be needed to accelerate the vehicle to orbital speed and to manoeuvre it.

*_This post has been updated to clarify that the Friendship 7 capsule had about the same orbital speed as the International Space Station, Glenn's destination in 1998.

And propulsion to orbital speed puts more than 50percentt of the rocket's fuel energy into that of the satellite -- an efficiency that's hard to beat.

As the Progress vessel spirals down into the atmosphere it will undergo a massive deceleration from its orbital speed to about 180mph.

But that kind of suborbital jaunt is a far cry from getting into orbit, because orbital speeds are so much higher and have such small margins.

Asteroids included on this list have different orbits, spin rates and orbital speeds.

As the material in the disk comes closer to the accretor, it speeds up in response to the stronger gravitational pull and moves along a spiral path at supersonic orbital speeds while still drifting gradually inward at subsonic speeds.

At orbital speeds, colliding with an object the size of a pebble can ruin the day of a multi-billion dollar spacecraft.There was, however, a second reason for America's anger over the Chinese test.

Operated by clockwork and old-fashioned ceiling tracks, models of the planets and some of their moons slowly circled a golden sun around the base of the old planetarium, giving viewers a general idea of the solar system's layout, relative distances and orbital speeds.