Could be The Experimenter if it was live action.
I do recall another series which had two CGI aliens viewing everyday life on Earth from their spaceship but I don't know what it was called.
That's Tiny Planets.
a similar show with a UFO which was live action.
Please don't feel the need to say thanks to me or anyone else who has attempted to help you then with the scatty bit of information you provided...
Oh and Jake was correct. The CGI one that I described was Space Ark, so my thanks to him.