If space is a vaccuum(Empty) howcome they say there is energy in it?

Answer 1

There are photons moving through it and there are also pairs of virtual particles that spring in and out of existence. For example, an electron and a positron could pop out of the vacuum and disappear within the uncertainty principle allows. There's interesting effect that was proves this hypothesis and it listed out here ...

http://en.wikipedia.org/wiki/Casimir_effect

Answer 2

Space is a much better vacuum than we can make here on earth. The traveling wave tubes that are used to amplify microwave are not in a Glass case . The vacuum space is better and we do not need to lift the weight of the glass. Light travels through space with no loss . If light lost a very small part we could not see most of our universe.

Answer 3

Space is not a complete vacuum. There is an average of 1 hydrogen atom per cubic centimeter. Energy is stored in the ether that makes up the fabric of space. It's visible on a quantum level, about the Planck Length.

Answer 4

Not only is space not completely devoid of matter, even between the molecules that exist in outer space there is energy in the form of photons moving through space. Also there is the left over radiation of the big bang that permeates all of space at 3º above absolute zero so space is never empty of energy.

Answer 5

There's a good article at the link. Vacuum energy or zero point energy is usualy equated with Einstein's cosmological constant. It's also been equated to "dark energy", but it's 120 orders of magnitude too large!

Answer 6

Inside of a phospherescent light bulb is a there is a vacuum. Inside the same bulb there is a filament. When electric current is run thru the filament, it lights up or gives off electromagnetic radiation that you can see. Now how is that possible inside a vacuum? Just answered your own question.

Answer 7

The solar energy is 7 times as great in space as it is inside our atmosphere.