Ryan Gosling ’s newest costar is high-maintenance, had an entourage around him at all times and required his own wardrobe department on set.

It's lonely out in space for Ryan Gosling this week, but that's what happens when you embark on a suicide mission to save a planet.

From Gosling's gripping central performance to his character's incredibly sweet friendship with a rock-shaped alien he dubs "Rocky" (puppeted and voiced by James Ortiz), there's a lot to love in "Proj...