NASA expects to soon launch a mission to create the most colorful 3D map of the entire sky yet. Known as SPHEREx, it will analyze every pixel to see what's there, what it's made of, and how far ...

[DaveMakesStuff] demonstrates a great technique for 3D printing a sphere; a troublesome shape for filament-based printers to handle. As a bonus, it uses a minimum of filament. His ideas can be ...