What is the average speed of a comet?
Typically, for a comet at 1 Astronomical Unit (AU) (the average distance of the earth from the sun), it would have a speed around 10 – 70 km/s. Compare this to the earth’s orbital speed of 25 km/s.
How fast do comets move across the sky?
kilometers per second
Why do comets travel so fast?
A comet has the greatest gravitational potential energy the further away it is from the thing that is exerting a gravitational pull on it, explains Watson. This means the comet is moving faster when it falls into the inner solar system because its potential energy is converted into kinetic energy.
How does the comet travel?
Orbit of a Comet. Comets go around the Sun in a highly elliptical orbit. They can spend hundreds and thousands of years out in the depths of the solar system before they return to Sun at their perihelion. Like all orbiting bodies, comets follow Kepler’s Laws – the closer they are to the Sun, the faster they move.