2015 was a year where we expanded our view of the universe, embraced new technologies and got a hint of the profound changes to come.
Near-Earth orbits are filled with useful satellites, and also flying junk. If we're not careful they may collide - literally.
Ground-based telescopes are getting bigger and better while still being cheaper than space telescopes. But the vital scientific contributions made by Hubble demonstrates why we need both.
After a slow start, Hubble's ultraviolet vision changed the face of astronomy.
Astronomers from around the world identify their favourite images sent back to Earth by the Hubble Space Telescope.
An unremarkable speck in the sky was transformed into an unique astronomical object – and Hubble was there to capture it.
Hubble's Deep Field images are the next best thing to a time machine, revealing details of galaxies from the early universe, 13 billion years ago.
The Hubble Space Telescope launched 25 years ago in 1990. But O'Dell started on the project in 1972, garnering support for the world's first telescope free of Earth's atmosphere's blurring effects.
Twenty-five years on and the Hubble Space Telescope is still taking some amazing images. But there have been a few glitches over the years, right from day one.