What is the speed of Gravity?

Speed of Gravity? Surely that seems an absurd idea, but I wouldn’t discuss if there wasn’t a catch in it. According to Newton, Gravity was absolute, it is transmitted instantaneously between objects. ‘It doesn’t travel, it simply exists’. Einstein’s Special Theory of Relativity concluded that the Speed of Light is the ultimate speed, and nothing can…

Space-time fabric

Before Einstein, the viewpoint of scientists was that Time was Absolute. It does not change for anyone. You can imagine it as the whole universe having a single pace of time. So if an hour has passed for me, an hour would pass for anyone travelling with some velocity, an hour for someone on top…

What’s wrong with Gravity?

To be honest, gravity is probably the only reason we are on this planet. We wouldn’t have existed if there was no gravity in the first place, but imagine the case where the gravity from Earth suddenly vanishes for humans, and not for any other body like our Moon. What would happen? Well, on Equator,…