Yes-ish. Nuclear bombs are the best way to deflect asteroids, but precisely because they wouldn’t be used like they are in the movie. As the article notes, it’s

Yes-ish. Nuclear bombs are the best way to deflect asteroids, but precisely because they wouldn’t be used like they are in the movie. As the article notes, it’s an x-ray flash that was studied. It’s a super effective way to impart a large momentum across the entire asteroid or comet, without breaking it into many smaller pieces you’d have to then deal with individually. The Outer Aoace Treaty very clearly outlaws their use in space though, for this or any other purpose.