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Landing of the Soyuz TMA-10M Spacecraft...ZHEZKAZGAN, KAZAHSTAN - MARCH 11: In this handout provided by NASA, Expedition 38 Flight Engineer Sergey Ryazanskiy of the Russian Federal Space Agency, Roscosmos, is helped out of the Soyuz Capsule just minutes after he and Commander Oleg Kotov of the Roscosmos, and, Flight Engineer Mike Hopkins of NASA (not pictured) landed in their Soyuz TMA-10M spacecraft on March 11 near the town of Zhezkazgan, Kazakhstan. Hopkins, Kotov and Ryazanskiy returned to Earth after five and a half months onboard the International Space Station where they served as members of the Expedition 37 and 38 crews.

Bill Ingalls/NASA/Getty

Flight engineer Sergey Ryazanskiy of the Russian Federal Space Agency, Roscosmos, is helped out of the Soyuz Capsule just minutes after he and Commander Oleg Kotov of the Roscosmos landed on Tuesday near the town of Zhezkazgan, Kazakhstan. They returned to Earth after five and a half months on board the International Space Station. Read more

This image obtained from NASA August 27,...This image obtained from NASA August 27, 2013 shows from more than 40 countries and 30 US states, people around the world as they shared more than 1,400 images of themselves as part of the Wave at Saturn event organized by NASA's Cassini mission. That event on July 19, 2013, marked the day the Cassini spacecraft turned back toward Earth to take our picture as part of a larger mosaic of the Saturn system. The images came via Twitter, Facebook, Flickr, Instagram, Google+ and email. The mission has assembled this collage from the shared images, using an image of Earth as the base image. AFP PHOTO / NASA/JPL-Caltech == RESTRICTED TO EDITORIAL USE / MANDATORY CREDIT: "AFP PHOTO / NASA/JPL-Caltech / NO MARKETING / NO ADVERTISING CAMPAIGNS / DISTRIBUTED AS A SERVICE TO CLIENTS == HO/AFP/Getty Images

Ho/Nasa/AFP

This Nasa image released on Tuesday shows a mosaic of photos from around the world collected as part of the Wave at Saturn event organised by those behind the US space agency’s Cassini mission. The event on July 19 marked the day the Cassini spacecraft turned back towards Earth to take a picture as part of a larger mosaic of the Saturn system. The images came via Twitter, Facebook, Flickr, Instagram, Google+ and email