Originally posted by RJHinds
I must disagree with Einstein if he said such a thing. I respect Einstein as
a great scientist; but maybe you are misunderstanding him. We have plenty
of space around us all the time and no one has ever proven that mass /
gravity warps (stretches) space. THIS IS ONLY A THEORY LIKE THE THE
THEORY OF EVOLUTION.
Dude. We 100% HAVE to use Einsteins equations to account for the stretching and compressing of space and time in one very useful way: GPS satellites. If we didn't have Einsteins genius to guide us, the GPS system would be less accurate than a navigator at sea 200 years ago.
Mass warps space, mass going fast warps time. You ever hear of black holes? Einstein rings?
Do you know there is only one thing that deflects light in open space where there are no atoms to diffract light: Space itself. Space guides light. One of the key experiments that brought Einstein to prominence was finding out that space was being bent by the mass of the sun, so a light, say a laser beam, if it was brought close to the surface of the sun but skimming above it, the path that light takes takes a tiny left turn towards the sun. That same laser beam if it was a million miles away from the sun would have its path bent way less but still bent a bit. It is the stretching of space near big masses that bends light because BECAUSE of the stretching and compressing of space.
If you look at black holes you find space so bent there that even a light beam cannot escape.
You really need to get your head around modern concepts in physics. It it were not for this basic discovery of Einstein, the GPS system would be about 4 miles off, totally useless. It is the equations that Einstein worked out that allows us to correct for the bending of space and time that mass and high velocity brings on. The faster things go, the slower time goes. This is a direct result of the bending of space-time by mass. This is not theory. It can be measured directly in the way particles come in from outer space, when they are going very close to the speed of light, the time frame of the particles makes them last a lot longer than the exact same particle going say 1/10th the speed of light. Some of these particles blow up and transform into energy and other particles and the ones going slower blow up a lot faster and never make it to Earth. The ones going very close to c gets all the way to earth for one reason: the velocity slows time down for that particle and extends the distant it can travel before exploding so they actually make all the way to the surface. We have detectors in space and detectors on the ground, we can measure the difference in the lifetimes strictly based on the velocity. High velocity=longer life because time and space get warped. Low velocity, doesn't upset time or space so much so the natural lifespan of the particle causes it to explode a lot earlier.
That is only a couple of examples of the direct measurement of the bending of space and time. There are thousands of other examples I could talk about. Don't want to write a whole essay on the subject though. All you need to do is study the subject with an open mind, something I think you will have much difficulty doing.