Andy Weir

And people are like, what the hell do you mean?

You use no green screens on this movie, right?

So he tweeted this, right?

They went to Adrian.

Yeah.

They went to space.

Don't worry about it.

Chris Miller wrote, some clarification here.

No green screen doesn't mean no VFX.

There were, in fact, thousands of VFX shots of the film.

2018 shots, to be precise.

Green screen is something used in lieu of building sets or figuring out locations, lighting in advance, which can be noticeable if not done carefully and is something we didn't want to do.

We built, as you alluded to, we built the entire interior of the Hail Mary ship.

But within the ship, there were still wire and puppeteer removals and ceiling replacements, et cetera.

When Ryan is outside on the hull of the ship, because when I read this, I was like, what do you mean no green screen?

He's in space.

They went to Adrian.

We shot him in the front of a black background for space and a shifting hue background when we was up against the aurora of a planet, which allowed for truer interactive light on him than a green screen would.

The wide space exteriors and spaceship shots were entirely digital and beautifully done by ILM.

Rocky was a seamless blend of puppetry and animation from Framestore and other great work from many more.