Gallery: Hubble's greatest hits - 20th anniversary Summary: The Hubble space telescope was a total bust after it was dropped from space shuttle Discovery 20 years ago. But some fine tuning turned it into a grand scientific achievement. By Andy Smith | April 28, 2010 -- 10:43 GMT (03:43 PDT) Previous | Next Image 19 of 31 A blob of matter, called HST-1, was ejected from a black hole, giving us a spectacular light show. The Hubble had been tracking this activity for 7 years.Credit: NASA, ESA, and J. Madrid (McMaster University) Topic: Nasa / Space Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.