"The earth moves round the sun in an oval track, that has an average radius of 93 million miles, at a speed of 18 1/2 miles a second."
"Earth's average speed of revolution about the sun is 29.8 kilometers per second, while Mercury, which is the closest planet to the sun and therefore the fastest, travels at an average speed of 47.9 kilometers per second."
"Orbited by its companion, the Moon, the Earth travels at more than 65,000 mph (105,000 kph), covering millions of miles each year as it journeys through space."
I think I have whiplash! <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />
