PLANET EARTH
Before we get started we should first remember where we are....
Slightly under 8,000 miles in diameter, the Earth spins on its axis (surface at equator 1,038 miles an hour) and orbits the sun at 66,000 miles per hour, while at the same time, revolves, with the solar system around the center of the Milky Way Galaxy at a speed of 43,000 miles per hour.
30% of the Earth's surface is land and 70% water. The average depth of all the oceans is 12,450 feet.
The Earth's crust is 5 to 20 miles thick.
When I was a kid, in my mind, the Earth was an almost unimaginably large and very secure place, but today it has become, in my mind, a small blue marble hurtling through space.