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

by Anonymous 11 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 11 months ago

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

by Anonymous 11 months ago

\*Hawking and Tyson hold Einstein\*

by Anonymous 11 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 11 months ago

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

by Anonymous 11 months ago

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

by Anonymous 11 months ago

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

by Anonymous 11 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 11 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 11 months ago