Space station or imitation? Try our Gravity quizPublished4 March 2014Image caption, To celebrate the success of Gravity at the Oscars, US space agency Nasa has been tweeting its own images of space. Nasa says its snaps are 'the real Gravity'. Try our quiz to see if you can tell which pictures are the real deal and which are special effects from the box office hit.Image caption, Space station or imitation? Is this a Nasa shot or a scene from Gravity? Click through to the next image for the answer...Image caption, It's the real deal. This photograph shows the Sun shining on the International Space Station.Image caption, Astronaut or astro-NOT? Was this taken by Nasa or by a film crew back in sunny Shepperton in England?Image caption, It's the real deal. This photo shows flight engineer Chris Cassidy repairing the International Space Station in 2013.Image caption, Space station or computer animation?Image caption, This one's fake - it's a scene from the film Gravity!Image caption, Weightless flyer, or hanging on a wire?Image caption, It's the real deal. Mission Specialist Bruce McCandless was snapped 'free flying’ almost 100 metres away from the Orbiter back in 1984.Image caption, Sunny sky or CGI?Image caption, This one's fake. Sandra Bullock and George Clooney haven't really been to space!Image caption, Simulation or space station?Image caption, It's a simulation from the film. Gravity has won awards for its groundbreaking special effects.Image caption, Sun set or film set?Image caption, It's the real deal. The photo shows the sun setting over Earth, as seen from space.Image caption, Moon in the sky or CGI?Image caption, It's the real deal. This picture was taken from Space Shuttle Discovery in 1998.Image caption, Astronaut or astro-NOT?Image caption, It's the real deal! This is astronaut Ed White on the first US Spacewalk on 3 June 1965.Image caption, Space mission or animation?Image caption, It's the real deal. The snap shows space shuttle Atlantis high above the Earth on its final mission in 2011.Image caption, It's the real deal. The city lights of Spain and Portugal can be seen from the International Space Station. How many did you get right?