Perihelion Science Fiction is looking for:
WE ARE LOOKING for well-written, original science fiction, that is, “hard” science fiction. No fantasy. No horror. No fan fiction. No poetry. Stories do not necessarily have to restrict themselves to robots, rocket ships, and extraterrestrials. However, the science and/or technology must be integral to the story. If you remove the science, the story falls apart, or disappears altogether. If the plot can be easily reconstituted as a western, a swashbuckler, or a bodice-ripper, it is probably not for us, either. We aren’t fixated on political correctness. We don't object to explicit language, violence, or sexual situations, as long as it is necessary to the plot. We like humor and satire. We really don’t care if you are a minority, transgendered, or purple; the story is the focus and not the author.
They pay 1c/word up to $75, and are also on the lookout for articles, reviews, short fiction and artwork.
Guidelines here: http://www.perihelionsf.com/1403/submit.htm