Part of the zero-gravity training that Ender Wiggin (Asa Butterfield) endures is showcased in the latest Ender's Game photo, which also features Harrison Ford as Colonel Hyrum Graff. This adaptation of Orson Scott Card's hit sci-fi novel takes place in a future where the human race is trying to win an intergalactic war with an alien race known as the Formics. Each year, the best and brightest young minds are recruited to the Battle School, in hopes that one of these kids can bring this war to an end, some day. You can also read what Asa Butterfield had to say about his "space camp" training, and much more after the photo.

Asa Butterfield experiences zero gravity in the Battle Room in Ender's Game <blockquote class=One major thing we had to figure out was how to allow kids to fly in and out of here, knowing wires would have to be run on tracks in the upper areas. This whole thing had a pie slice, a couple of different parts of the ceiling, that we could remove."/>

To help prepare for this futuristic thriller, Asa Butterfield and the rest of his cast mates were sent to "space camp" before production began. Here's what the young actor had to say about his training.

"That was our very first week. It really broke the ice between all of us kids - we were good friends by the end of it. And it also gave insight into how it would have been to gone to Battle School. We were taught to march, all about cadences, and did a bunch of army drills. Lights off at 9 PM. Awake at 7 AM. Pretty brutal, but I'd do it again."

The zero-gravity shots, like the photo above, required a lot of wire work, and the actor spoke about the process of wearing a harness for a bulk of each day.

"It was really good fun. But yeah, wearing harnesses for nine hours, by the end of the day you're glad to get out of them. It's really tiring staying up there. And the chafing... it's exactly as you might imagine. All through rehearsals we would spend an hour each day on the wires. And then we spent a month and a half shooting the scenes. There was plenty of time flying around."

When asked about his favorite stunt, Asa Butterfield spoke about one of the zero-gravity scenes .

"There's a really cool sequence where I'm sort of spinning over backwards and I let go of my guns. They're floating by my side just going along. As I push myself through these two stars, I spin back over and grab the guns, then shoot the people around me. I loved doing that."

Along with wearing the wire work harnesses, the actor wasn't terribly comfortable in his Battle Room "flash suit" either.

"It's called a flash suit. It looks incredible, but wearing it was pretty uncomfortable, because they were tight and thick and didn't give you all that much movement. It's like wearing three wet suits and then putting on body armor over that. We had a few versions: a normal one, and then a slightly bigger one which let you wear a harness underneath. You wouldnt want to wear one for more than an hour."