.
The Vulcan/Storm tiff might break the review thread again!
I think there is the Galactic Core feat, which never gets mentioned, space lightning, which we've seen a few times, and vague/limited solar wind control/references. It's a very unexplored aspect of Storm's power so I think Ewing would have to do the heavy lifting when it came to space abilities if he wanted to expand on that since there just aren't many past showings he could draw upon.