It's a window into the wall constructed using straw bales. Its a proof of concept novelty in a charming window surround. Quasars shirt, please! Abusive comment hidden. (Show it anyway.)
Yeah... I totally thought this was going to be a story about the nerdiest proposal ever, with some physicist proposing marriage by blasting his intentions off into orbit using a space cannon. Now I'm disappointed! Abusive comment hidden. (Show it anyway.)