With the future of the Hubble Space Telescope somewhat uncertain, I thought it would be a good time to share our thoughts on some of the mysteries of the universe that the HST has helped unlock.
Please post a link to your favourite Hubble Space Telescope picture, and explain why it is your favourite. You can choose based on the scientific significance of the picture, or base your verdict on purely aesthetic concerns. It's completely up to you!
Please start posting while I decide on mine!