I agree, it's a terribly ambiguous headline. Headlines have a way of dropping everything that gives context to a sentence. Makes sense when you're limited to a

I agree, it's a terribly ambiguous headline. Headlines have a way of dropping everything that gives context to a sentence. Makes sense when you're limited to a relatively small piece of paper, but on the Internet you can write as much as you want. So put those extra words back in there! "SpaceX plans on launching a rocket bearing a satellite"... or better yet, "SpaceX plans on launching a rocket containing a satellite".