Untreed Reads has posted a call for submissions to a new anthology titled "Moon Shot: Murder and Mayhem on the Edge of Space". They're looking for stories set in space but with a strong mystery angle. 1500 to 5000 words with a May 30 deadline. Payment is a royalty split. You can find all the details here, and please note that there is a typo of 2012 for the deadline but the post just went up yesterday and was sent to the SMFS board by the editor yesterday also.
UPDATE: The date has been corrected by the editor.