That's a great question! It's tricky to talk about the "speed" of gravity because it's not something that travels like a wave or a particle. Here's why:

Gravity is a force, not a thing that moves. It's more accurate to say gravity acts instantaneously, meaning it doesn't need time to travel between objects.

Einstein's theory of General Relativity explains gravity as a warping of space and time caused by mass and energy. Imagine a heavy ball placed on a trampoline, it creates a dip. That dip is like gravity - it's a change in the fabric of spacetime, not something that travels.

But there's a catch!

While gravity doesn't have a "speed" in the traditional sense, changes in gravity do propagate at a finite speed. This speed is the speed of light, which is approximately 299,792,458 meters per second.

Think of it this way:

* If the sun suddenly disappeared, we wouldn't feel the effects of its gravitational pull immediately. It would take about 8 minutes for the news of its disappearance to reach us at the speed of light.

So, the short answer is:

* Gravity itself doesn't have a speed because it's not something that travels.

* Changes in gravity, like a sudden change in mass, do propagate at the speed of light.