I remember it was similar to a CGI-animated movie/series (definitely not drawn), maybe a miniseries, but it involved a boy from Earth, probably a teenager, who was able to travel to space and meet up with a team of other aliens and beings.
At the beginning, he was at like a playground which had a roundabout/merry-go-around. His suit was similar to an astronaut's and was white with green trimming; he either had blond or red/ginger hair.
The team was in charge of helping to protect the solar system and the main "rulers" were three floating "beings" whose heads resembled clouded black crystal orbs and they wore capes; one wore white, another wore red, and the third was either green or blue. I believe the red one turned out to be evil and was plotting to destroy a planet. Long story short, the team wins and the villain is punished by his fellow leaders.
One other thing I remember is that one hero rode like a ring-shaped vehicle/spaceship and his character was blue. There was a female heroine that I believe was a magenta color (not entirely sure about that one).
Not sure if this'll help, but I watched it from a CD. It was one of those CDs that had two different episodes from two different series or movies. I remember that you could pick left or right and the other choice had something to do with trains, but it wasn't from Thomas the Tank Engine or similar to Thomas. However, I do also believe the train tunnels were just to "take you" to start the episode or movie. I'm not very sure either, since it's been 10+ years since I've last seen the animation.
It is not Escape from Planet Earth (2013) or Planet 51 (2009).