Hm... interesting. Let me know when you have more details.
If you haven't done so already, you might want to have a look at the website Submission Grinder (I know, it's a silly name). It's a way of finding markets for stories and books. You can arrange its database by topic e.g. fantasy, horror, science fiction, poetry and so on. Also, Duotrope serves a similar purpose. It might give you some ideas on finding a niche market for your magazine.
Wrote quite a few when I was younger but they were mostly for fitness and bodybuilding magazines. The world has changed a lot since I was sending typewritten pages to editors.
Featured articles
Science article one
Science article two
Discovering the world article one
Random article one
In depth article one
Image showcase article
I think this is a decent structure. This looks like a popular science magazine. Am I right? Having said this, I know next to nothing about marketing or how to edit a science magazine. I just write stuff for them.
For this mag, who is your intended audience and what are they expected to know? This is usually the first question that someone asks themselves before any form of communication to the public.