I've read over the decades that a magnetic shield might protect a spacecraft from cosmic radiation. Its a fascinating idea that might only be theory or science fiction at the moment. In regards to that here is an article just in case someone isn't sure what I mean:
The article even mentions simulations about midway into the article. Does anyone know if research has continued?
My big question though, is how much electrical power would be required to protect a space vessel in this way? How large would the field be in order to be useful?
Better yet, please use some practical objects that anyone can wrap their head around: What if you were using similar technology to protect the Apollo Command Module? Or the Discovery One from 2001 (140 meters long).
In laymans terms, how much electrical power would it take to create a magnetic shield?