LEGO Space Police is a Lego Theme released in 2009. It was said to be a replacement to Power Miners, although
some say it was Mars Mission. It has not released sets since 2010. It is probably getting discontinued due to the new theme Alien Conquest. It used to be very popular when it came out, but like most themes is now not very popular.
Gold Heist
Here are just some of the sets from the Space Police sets.
Galactic Enforcer
Space Police Central
Squidman's Pitstop