Royal Museums Greenwich - Mind-blowing space photos - Astronomy Photographer of the Year now open

Insight Astronomy Photographer of the Year 18 September 2015 – 26 June 2016 Free entry The winners of our annual astrophotography competition are now on display in a free exhibition at the Royal Observatory. With 2700 spectacular entries from over 60 countries, it's been the best year yet. Watch searing hot loops of plasma radiating from the surface of our Sun or beautiful Aurorae sweeping over frozen landscapes. See the winning images, hear the stories behind them and marvel at our place in the Universe. #astrophoto2015

See stellar images

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Own the images The breath-taking photos also feature on a beautiful range of souvenirs. From scarfs to iPad skins, prints to bags, there's something for everyone. Every purchase supports the Museum.

Buy online Halloween Sleepover at Cutty Sark 31 October – 1 November Spend the night on board the world-famous Cutty Sark with the ship's very own witch – our figurehead Nannie. There'll be lots of fun games, Halloween-themed workshops and spooky storytelling. Book online I am because you are 15 October We're celebrating the centenary of Einstein's famous Theory of General Relativity. Join a group of scientists and science fiction writers as we exploreEinstein's strangest idea and mark the publication of a new anthology, inspired by General Relativity.  Book online Voyage of the Damned 31 October Going to sea is a dangerous business. This Halloween uncover tales of death, disease and destruction from our archives. Enjoy candlelit tours of the Museum and hear a variety of ghastly talks from our curators.  Do you dare? Cutty Sark Studio Theatre 16 October – 15 November Our autumn season begins next month with a range of performances in the unique setting of Cutty Sark's lower hold. There's a fantastic mix of comedy, music and theatre with appearances from Alistair McGowan, Phill Jupitus and Nick Ross. Book online Trafalgar Day Commemorations 20 – 21 October This year we have a range of events to mark Trafalgar Day – one of the nation's most important naval victories. We begin the day before the anniversary with a special talkby our Curator of Naval History, Dr James Davey. He'll overturn many misconceptions about the battle and launch his new book In Nelson's Wake. On the day itself you can explore letters and journals written by men in Nelson's navy while our curators give 'live' updates on the progress of the battle. You can also see Turner's masterpiece the Battle of Trafalgar on display in a free gallery.  Find out more