How do I make similar object gravity

Hi!
Any ideas how to do the same movement as in this game:



Video: https://www.youtube.com/watch?v=ZXuQKyFzU0Y

@artheads

I did this for another guy while ago, is not perfect but can give you some ideas

https://www.dropbox.com/s/qykbfd9utqqlwgk/GravityPlanets2.capx?dl=0

[quote="tarek2"][/quote]
Thanks a lot, I'm gonna check it right now!