What Is The Deal With The Show Heroes?

I’ve always wanted to watch it. I am into shows like Weeds, Desperate Housewives, Extreme Home Makeover Home Edition, Brothers & Sisters, etc. I assumed since the one girl in the show is a cheerleader who has superpowers or something the show would be something like not sci-fi, just a little bit actiony and also kind of like degrassi or something. Then I saw it on Tv and it looked like friggin Star Trek! It was talking about some star on fire or something and they looked like they were in space! Is this show like a sci-fi or what?
P.S no offense intended to star trek or sci-fi fans…