The IMAX screen is the ultimate planetarium in the awesome documentary Hubble 3D. It hurtles you into outer space, along with a crew that traveled 350 miles above Earth to repair the Hubble telescope (as the planet looms like a vast milky-blue wall, we feel we too are walking on air). Then it takes you to really outer space, where we float ''through'' the Hubble's miraculous images — a trippy grand canyon of matter, with nebulas like exploding roses. In a marvel of perspective, the 3-D reveals each galaxy to be a mere drop in the cosmic ocean, which is itself just another drop.