Gwen started to flip through her book, she had heard that string of letters somewhere before. She raised her hand again. Not that she wanted to be the annoying kid answering all of the questions but House Points. She'd heard that Ravenclaw hadn't won that competition in some years. "Isn't it something to do with the Hubble Space Telescope?" she asked. What exactly it was, she didn't know. Maybe it was a special piece of machinery for the Hubble? They were in Astronomy, it was a logical answer.