Damn .. this is so good it doesnt feel like a gamejam submission.
Love the graphics ( nice texturing, modeling ), the atmopshere ( seing earth in the background really helps with the story) and the gameplay feels really good ! Gravity orb effect looks amazing !
I managed to get out of the tube you may need to fix that. The ambiant sound is a bit too loud.
Other than that, your game is perfect and i can really see your team win this gamejam!