Contribute correction: Sphere Redux (unreleased)

           _    _    __   __    ______  
  ____    | || | ||  \ \\/ //  /_   _// 
 |    \\  | || | ||   \   //    -| ||-  
 | [] ||  | \\_/ ||   / . \\    _| ||_  
 |  __//   \____//   /_//\_\\  /_____// 
 |_|`-`     `---`    `-`  --`  `-----`  
 `-`