+197 Gravity is faster than speed of light, amirite?

by Anonymous 8 months ago

No. Gravity travels through space time like a wave. That wave moves *at* the speed of light (the speed limit of *anything* traveling *through* spacetime. So if the sun were to just disappear entirely, the earth would keep moving in its normal orbit for a whole 8 minutes before it started to move off in a straight line. Photons travel in a straight line at all times…from their perspective. Light seems to bend under a gravitational influence because spacetime itself is curved by gravity and the light is traveling "straight" through the curved spacetime. The reason light cannot escape a black hole is because the escape velocity at the event horizon of a black hole is greater than the speed of light (this is the definition of what the event horizon is).

by Anonymous 8 months ago

So, does that mean my dog's crate is faster than my dog?

by Anonymous 8 months ago

\*Hawking and Tyson hold Einstein\*

by Anonymous 8 months ago

No, that's not how it works, gravity is the result of the curving of spacetime due to the presence of massive bodies… It doesn't have a speed at all because it's literally just caused by a curvature. This is like saying if you fall into a ditch, and the sides are too steep for you to get out, that it means the ditch is faster than you.

by Anonymous 8 months ago

Is the force of a wall faster than the speed of the car hitting it?

by Anonymous 8 months ago

the effects of gravity waves travel at the same speed as light through a vacuum: the speed of causality.

by Anonymous 8 months ago

Nope. But oddly the speed of shadow can be faster than light.

by Anonymous 8 months ago

Ummm, no. a force and a speed are two different things. Thats like saying a tractor trailer truck is faster than a Cessna because it has more Torque. The two aren't directly comparable.

by Anonymous 8 months ago

Out driving my car and I look down. "Wherever I go there is already road. Therefor the road is faster than my car."

by Anonymous 8 months ago