What is the fabric of spacetime made of?

The fabric of spacetime is made of density, pressure and flux of energy in all of its forms. Without energy there would be no spacetime.

Does Luminiferous Aether exist?

The timeline of luminiferous aether (light-bearing aether) or ether as a medium for propagating electromagnetic radiation begins in the 18th century. The aether was assumed to exist for much of the 19th century—until the Michelson–Morley experiment returned its famous null result.

Can the fabric of space be ripped?

According to Einstein’s general relativity, it is impossible to tear the fabric of space. Black holes are another example of space stretched to its limit, and there is a strong experimental basis for believing that black holes exist.

Does light have a medium?

We know that light doesn’t need a medium through which to travel because the speed of light is experimentally constant: independent of the movement of the source or detector or the direction in which it travels. Light contrasts with sound, which travels through the air (or some other material medium).

What is Einstein’s theory of relativity?

He called it relativity. This theory says that time and space are linked together. Einstein also said our universe has a speed limit: nothing can travel faster than the speed of light (186,000 miles per second). Einstein’s theory of relativity says that space and time are linked together.

What is gravity according to Albert Einstein?

It is here that Einstein connected the dots to suggest that gravity is the warping of space and time. Gravity is the curvature of the universe, caused by massive bodies, which determines the path that objects travel. That curvature is dynamical, moving as those objects move.

What did Einstein say about time and space?

More than 100 years ago, a famous scientist named Albert Einstein came up with an idea about how time works. He called it relativity. This theory says that time and space are linked together. Einstein also said our universe has a speed limit: nothing can travel faster than the speed of light (186,000 miles per second).

What is the speed of light according to Einstein?

Einstein also said our universe has a speed limit: nothing can travel faster than the speed of light (186,000 miles per second). Einstein’s theory of relativity says that space and time are linked together. Credit: NASA/JPL-Caltech What does this mean for time travel?