For the past few years, Sport Rocketry Magazine is the only game in town.
At one time we had The Tripolitan/High Power Rocketry magazine, which was published by Tripoli, then Rockets Magazine, that was supported by Tripoli.
Extreme Rocketry, which was a very slick magazine from the late 90's early 2000's, and Launch Magazine, which started as a model rocketry magazine with a little space exploration content, but by its demise was just the opposite.
Unless you're looking for suggestions in the space exploration category (which others will have to provide) I got nothing,