Professor Frederic Pont at the Unversity of Exeter has reconstructed the startling, alien colours of a distant world's sunset - HD 209458, known as Osiris, using data from the Hubble space telescope.

THERE'S nothing like a glorious sunset to make you feel like you are in another world - especially if it's green. Watching the sun go down on the planet Osiris would be a "truly alien" experience, ...