The Raelians are most known for two things. First, they believe humanity was created by aliens and that evolutionary theory is, thus, deeply flawed. Second, they have a very open and accepting approach to all forms of legal sexuality. They encourage people to be loving in all manners, including sexually if they desire. They embrace or different sexual orientations. They encourage experimentation. And they hand out condoms at a variety of events because they are also concerned about STDs as well as unwanted pregnancies.
Sexuality of the Raelian Movement covers a variety of these topics. Of particular note is that while they are quite open about sexuality, they aren't necessarily anymore sexually active than the average person.