First one is to cluttered. Lower the contrast too, cause the girl looks really bad.
Remove the splatters, because they aren't original, and kinda ruin the tag.
Second on is a bit to plain, and the effects are really basic.
It needs some spice, like some lighting effects.
Third one is good, yet very unoriginal. Get a new idea as to two planets in a tag.
Third is favorite, and I think is done the best. The only thing is it's a bit over-contrasted, and the red dots to the far right.