Pick up a copy of Science Illustrated. This magazine is amazing. It only came out last December, and only two issues have been published, but I've been so wowed, I already subscribed for a full year.
It has amazing photos (samples of which are on the website linked above), great articles and a wide variety of topics. Its like National Geographic, but with a lot less heft. If you find you never have the time to read a full issue of National G, this magazine is for you.
And its a decent price too.