How to make an atom like animation using CSS3 animations?

Question

I\'ve being trying this since 3-4 days but am not able to get how do I make this animation, not even sure whether is possible to make one like this using only CSS3?

Answer 1

Definitely possible with CSS. I put an extremely basic together as a proof of concept before noticing @prashanth's post. The one he found is waaay cooler, but here's mine anyway...super bare-bones but a little fiddling and it'd look pretty good.

http://jsfiddle.net/BZFJ8/2/