Board Thread:General Discussion/@comment-27511601-20151231040526/@comment-27524064-20160110162843

Actually Boros kick that sent him to the moon most likely was around light speed more or less. As for the plnet thing I think he's referring to a pic of Saitama having blown through a planet that looks like it may have been drawn by murata, but I don't know if that picture was confirmed to be canon or not.