William > And how is 'nothing' deployed?
I was reading a scientific description of the atmosphere. I thought it extended about 120 miles up and then ended. I was surprised to learn about the exosphere, the outermost layer of the atmosphere that extends from 690 Km to 10,000 Km above the Earth. Wow. The molecules of gases are so far apart they can travel 100 km before colliding with one another, and since they so rarely collide with each other, the atmosphere doesn't behave like a fluid. There is no 'nothing' out there or anywhere. We think of outer space as (a) above the atmosphere and (b) empty. But if you widen your field of measurement or study, then the empty space is full of objects. It seems counterintuitive to comprehend galaxies colliding and tearing each other apart, what with all that "empty" space between objects in it. But that's exactly what happens at the molecular and atomic level, where the size of the particles in atoms is so tiny compared to the space between particles in the same atom or molecule. | | | | | | | | | | | | | | | | | Michael Brady
