What do you think might happen if an object travels faster than the speed of light?

Time Travel Special relativity states that nothing can go faster than the speed of light. If something were to exceed this limit, it would move backward in time, according to the theory.

How is space expanding faster than light?

The restriction that “nothing can move faster than light” only applies to the motion of objects through space. The rate at which space itself expands — this speed-per-unit-distance — has no physical bounds on its upper limit.

Is the speed of light relative?

The speed of light is constant relative to everything. Light differs only in that everyone perceives light to have the same relative speed; 299,792,458m/s in a vacuum.

Why is space-time a fabric?

Space-time can be thought of as a ‘fabric’ in which the objects of the Universe are embedded. Those objects – stars, planets, black holes – make space-time curve in upon itself, just as an elastic fabric holding a ball would do. The more massive the object, the deeper the curve – the same as in a fabric!

What does relativity theory say?

Essentially, it’s a theory of gravity. The basic idea is that instead of being an invisible force that attracts objects to one another, gravity is a curving or warping of space. The more massive an object, the more it warps the space around it.

Why can’t we move faster than the speed of light?

Hence, an object moving at the speed of light through space experiences no time at all or in other words is frozen in time. So, the real reason why we can’t move faster than the speed of light is that once we’re moving entirely through space, there’s no more speed to be gained.

What is Einstein’s space-time theory?

Gravity as Curved Spacetime Gravity feels strongest where spacetime is most curved, and it vanishes where spacetime is flat. This is the core of Einstein’s theory of general relativity, which is often summed up in words as follows: “matter tells spacetime how to curve, and curved spacetime tells matter how to move”.

How does special relativity explain the speed of light?

The theory of special relativity explains how space and time are linked for objects that are moving at a consistent speed in a straight line. One of its most famous aspects concerns objects moving at the speed of light. Simply put, as an object approaches the speed of light, its mass becomes infinite and it is unable to go any faster

Does the fabric of space-time have mass?

TL;DR: The “fabric of space-time” has an energy density and also a pressure, but not something that would be called a mass. So there is a small issue about definitions. The “fabric” of space-time (no one uses that term) is a very misleading term because it isn’t like a piece a cloth. It is the playing field that all action takes place upon.

Can anything move faster than the speed of light?

A theory like… general relativity. It’s true that in special relativity, nothing can move faster than light. But special relativity is a local law of physics. Or in other words, it’s a law of local physics. That means that you will never, ever watch a rocket ship blast by your face faster than the speed of light.

Is spacetime a form of matter?

If we set a lower arbitrary value as a baseline than the zero mark at the cosmo constant, spacetime then becomes a material which has mass intrinsically. If spacetime has intrinsic mass, then it also is a form of matter. Or is at least intimately linked with matter.