This photography competition is organised by The Royal Society, based in London, UK.

Participants are invited to submit images illustrating a scientific phenomenon.

“ Winning entries are chosen according to two key criteria: they should be aesthetically pleasing, and convey an interesting scientific phenomenon.

Photos may be submitted to one of five categories:• Astronomy,• Behaviour,• Earth Science and Climatology,• Ecology and Environmental Science,• Micro-imaging.

A minimum 150-word description of the scientific context and technical details must accompany each entry.