We have to slow the spacecraft down to Mars’ orbital speed.

It can be used to refer to either the mean orbital speed, the average speed as it completes an orbit, or instantaneous orbital speed, the speed at a particular point in its orbit.

The term can be used to refer to either the mean orbital speed, i.e. the average speed over an entire orbit, or its instantaneous speed at a particular point in its orbit.

The simple equation describing orbits has only three variables: orbital distance, orbital speed, and mass.

A projectile accelerated to orbital or escape velocity at ground level by linear accelerator can traverse the atmosphere with acceptable speed loss.

The orbital speed of any satellite depends on its distance from Earth.

No explosives are needed; at orbital speeds, kinetic energy does the damage.

^ Orbital speed is calculated using the mean orbital radius and the orbital period, assuming a circular orbit.

Speed of Earth's orbit around the Sun = 108,000 km/hr

No explosives are needed; at orbital speeds, kinetic energy does the damage….

In the vicinity of the Sun, the orbital speed is about 220 km/s.

The relation between orbital speed and acceleration is given by the formula:

The four-velocity of a body on a circular orbit is given by:

In that case, Kepler’s second law says that the orbital speed is constant.

Due to its high orbital speed, it is somewhat challenging to reach.