The Leeds rapper, real name Kieron Harvey, said he was glad to be back in the real world as he signed autographs for his new found fans.
The 22-year-old said: "I've missed being with my friends and family. They supported me 100 per cent when I was in the house an were ecstatic to see me."
Science, who was recently voted off the Channel 4 show, said he quickly got used to life inside the Big Brother bubble.
"I felt comfortable with it because the way i've been brought up I can maintain in any type of surroundings, do you get me?
"I stayed confident and positive so the other housemates felt threatened by that because they couldn't manipulate me.
"I've got no hard feelings towards any of them though, I got on well with them all in my own way.
"People out there call me the true winner. I left there without the prize but I still left with my pride."
Science said he was given his nickname by his cousin Festa "because of the way I put my music together and the fact that i'm quite a deep person".
As he made his promotional tour around Leeds, he said he was now keen to make music and work on "visual artistry", such as documentaries.
"I can't really think about the yesterdays. I've got to think about my tomorrow and today," he said. "I'm just looking to venture to achieve my next achievement - whatever that happens to be".