Physics Question

Factual Questions
1

I have wondered about this for a while maybe someone knows…

Have physicists ever tried to measure the speed of gravity? Is it the same as the speed of light?

For instance if you suddenly blinked into existance a body of mass (A) some distance from another body of mass (B), how long would it take for B to be affected by A’s gravity? Does it hit all at once or does the Force start at zero and then rise to the max effect? Is this moot because a mass never just “blinks” into existance? Is this moot because we don’t understand the nature of gravity well enough yet?

Just curious…

2

Here you go. http://www.physicscentral.com/action/action-02-8.html
They are called gravity waves.
The question you asked is still one the big mysteries in physics but lots of research is going on.

3

Please note that the article that I linked to is several pages long and the 2nd page starts to talk about how physicists are building giant or exotic detectors for them.

4

http://www.straightdope.com/mailbag/mgravityspeed.html

5

Perfect, thanks all!