> This orbital velocity at the surface of the earth is some 40,320 km/sec.
Huh? Is this right? That's really fast, like 24,800 miles per second, which is a significant fraction of c (the speed of light, 186,000 miles/sec). >10% of c, is this a typo?
Huh? Is this right? That's really fast, like 24,800 miles per second, which is a significant fraction of c (the speed of light, 186,000 miles/sec). >10% of c, is this a typo?