Insight Astronomy Photographer of the Year 2015 shortlist – in pictures

The competition, which is run by the Royal Observatory Greenwich in association with Insight Investment and BBC Sky at Night Magazine, is now in its seventh year and continues to go from strength to strength, receiving a record number of over 2700 spectacular entries from enthusiastic amateurs and professional photographers from over 60 countries spanning the globe.

Astronomers discover largest known structure in the universe is … a big hole

Scientists searching for an explanation for an unusually cool area of sky instead discovered a supervoid: an empty spherical blob 1.8 billion light years across

Hubble at 25: the cosmos at its most breathtaking – in pictures

The Hubble telescope was launched in April 1990. Ever since, it has been providing astronomers with breathtaking images of the cosmos

Original Observer images for January 2015

This month’s showcase for photography commissioned by the Observer, features portraits of Sienna Miller, Stewart Lee, Laura Marling and Marilyn Manson. Look out for pictures of fast-food outlets in Wigan and Brixton and for Chelsea hero Frank Lampard’s return to Stamford Bridge.