Question

Theory of relativity by Albert Einstein

Answer 1

Gravity Probe B showed this to be correct. In 1905, Albert Einstein determined that the laws of physics are the same for all non-accelerating observers, and that the speed of light in a vacuum was independent of the motion of all observers. This was the theory of special relativity.

Answer 2

Answer:

it has two interrelated theories...

i) special relativity: it applies to all physical phenomena without gravity.

ii) general relativity: its all about gravitation and its relation with other forces.

He says that we are in a spacectime fabric, means that think about a elastic cloth when u put a metal ball in that ... the cloth streches and the ball little pulled down. like that our planets and stars also in a fabric. that means gravity.