In the sense of "give someone a shout that you've got a post for us", yeah. You submit the post to the blog, it sits in a queue until an editor publishes it
@LordDust welcome! Create your post on Medium. Pro tip: make a draft but don't hit the "publish" button just yet. Tell us your user name on Medium so we can add you to the contributors list to the blog, and then you'll be able to submit your draft.
@LordDust ok, I've added you. When you create a story you should now have a "submit to publication" option and Universe Factory (our blog) should show up on that list.