I've been working on a prequel to my Embarkment novellas, and I did some research the other day for a scene where the hero tries to explain to the heroine why communication in space and space travel are complicated. A little Googling gave interesting and mind-boggling numbers.
1. The Earth spins around its axis
Everyone knows that, but do you know how fast it spins?
Around the equator it moves at approximately 1,000 miles per hour. Right now, the ground under my feet is moving at 1,000 miles per hour. I just don't notice it.
2. The Earth moves around the sun
The Earth moves around the sun and we consider one trip around the sun one year. This another fact everyone knows, and it isn't weird until you start thinking about it.
We travel around the sun at 67,000 miles per hour. Not just that - we're accompanied by the moon. It not just travels with us around the sun, it also travels around the Earth at a speed of 2,288 miles per hour.
The moon rotates too, it just rotates at a speed that matches its orbit around the Earth, so to us it looks like it doesn't rotate.
3. Our Galaxy rotates
We are in the outskirts of an arm of the spiral galaxy called the Milky Way. Vintergatan in Swedish. The galaxy rotates, and we rotate with it. At a pace of 515,000 miles per hour.
Is your mind getting tired yet? Mine is, so we shouldn't even get into stellar drift and the universe expanding.
And you think I'm speeding when I go 85 mph on the highway. Pfft. LOL!