“Let's return to Archytas's staff and to the expanding Universe. A javelin that is thrown straight upward will drop back down a… — Henning Genz Copy Share Image
Throughout my life, I've had different metaphors for freedom. At one time, it was skin diving. In the ocean you feel weightless;… — Sam Keen Copy Share Image
I didn't really escape that gravity until I moved 300 miles south to go to college at 18, where authorship no longer… — David Knopfler Copy Share Image
“Briefcase Crunch time. To escape the gravity of Jupiter, a spacecraft would have to travel over 134,000 miles per hour! Compare that… — Lee Strobel Copy Share Image
