Gravity Problem

[Dark Photon]

If we have a star, let us give an example of Alpha Centuri and a object orbiting it let us label OBJECT X. assume Object x is 1/2 light years away from alpha centuri. if ( and this will not happen, so this question has little purpose) alpha centuri is wiped out of existance, when will OBJECT X stop being influenced by its gravity?


suddenly?

or after half a year?

can no message travel faster than light? and does this link in with the Graviton the assumed particle of gravity

http://www.spaceflightnow.com/news/n0312/03gravitywaves/gravitywaves2.jpg

[ydoaPs]

1/2 year

[insane_alien]

1/2 year. bit of a no brainer.

[ydoaPs]

there was a mathematical answer to this question a while ago, but i can't seem to find it atm.

[5614]

I dunno about the mathematical proof, but we know that gravity travels at the speed of light. We can use that to answer the question (as has been done above).

[Destroid]

Can someone link me? Last time I googled this I came across articles saying that gravity was instant, or if not then very fast :/

EDIT: Nevermind, just found the new scientist article.