Click on the winning entries below to enlarge them.
You can see the photos in a free exhibition at the Royal Observatory, Greenwich.
EARTH & SPACE Winner & OVERALL ASTRONOMY PHOTOGRAPHER OF THE YEAR Winner
Blazing Bristlecone by Tom Lowe. White Mountains, California, 14 August 2009. An ancient Bristlecone Pine stands before the Milky Way as a meteor streaks the sky. The lighting effect on the tree in the foreground was actually caused by accident when the photographer was setting his equipment up.
DEEP SPACE Winner
Orion Deep Wide Field by Rogelio Bernal Andreo California, USA, 10 June 2010. A panorama of a section of the constellation of Orion, including the 3 famous stars of the belt, the Horsehead Nebula and the Orion Nebula.
OUR SOLAR SYSTEM Winner
Siberian Totality by Anthony Ayiomamitis (Greece). Taken during a total eclipse of the Sun, this image reveals the faint solar corona usually hidden by the photosphere. The long streamers and prominences show the sun's activity beyond the surface, reaching out into the solar system.
YOUNG ASTRONOMY PHOTOGRAPHER Winner
A Perfect Circle by Dhruv Arvind Paranjpye. (India, aged 14) A solar eclipse photographed in India in 2009. The light around the edge of the circle is the sun's atmosphere, or corona, only visible during an eclipse. The photographer has used the dark clouds to act as a filter.
PEOPLE & SPACE Winner
Photon Worshippers by Steve Christenson, 23 December 2009. For a few weeks every year the setting sun is in the correct position to shine directly through this portal in a large rock formation at Pfeiffer Beach in Big Sur, California.
The Whirlpool Galaxy (M51) by Ken Mackintosh (UK). Drawn together by gravity, two galaxies interact. Eventually the smaller galaxy will be torn apart or swallowed by the larger one - a process that will take millions of years.