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LONDON, ENGLAND - JANUARY 26: The Soyuz TMA-19M descent module used by British astronaut Tim Peake to return from the International Space Station is unveiled at the Science Museum on January 26, 2017 in London, England. The Soyuz TMA-19M carried astronauts Yuri Malenchenko (Commander, Russia), Tim Kopra (Flight Engineer, USA) and Tim Peake (Flight Engineer, UK) to the International Space Station on 15 December 2015 and returned the same crew to Earth on 18 June 2016. Major Peake also announced that he is to return to space on a second mission to the International Space Station. (Photo by Leon Neal/Getty Images)

LONDON, ENGLAND - JANUARY 26:  The Soyuz TMA-19M descent module used by British astronaut Tim Peake to return from the International Space Station is unveiled at the Science Museum on January 26, 2017 in London, England. The Soyuz TMA-19M carried astronauts Yuri Malenchenko (Commander, Russia), Tim Kopra (Flight Engineer, USA) and Tim Peake (Flight Engineer, UK) to the International Space Station on 15 December 2015 and returned the same crew to Earth on 18 June 2016. Major Peake also announced that he is to return to space on a second mission to the International Space Station. (Photo by Leon Neal/Getty Images)

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IN SPACE - JULY 12: In this handout image provided by the National Aeronautics and Space Administration (NASA), the International Space Station's Cupola, backdropped against black space, a horizon scene and various components of the orbiting outpost, including the Leonardo Permanent Multipurpose Module, right, along with two "parked" Russian spacecraft -- a Soyuz and a progress supply ship July 12, 2011 in space. Space shuttle Atlantis has embarked on a 12-day mission to the International Space Station where it will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts. This was the final mission of the space shuttle program, which began on April 12, 1981 with the launch of Colombia. (Photo by NASA via Getty Images)

IN SPACE - JULY 12:  In this handout image provided by the National Aeronautics and Space Administration (NASA), the International Space Station's Cupola, backdropped against black space, a horizon scene and various components of the orbiting outpost, including the Leonardo Permanent Multipurpose Module, right, along with two "parked" Russian spacecraft -- a Soyuz and a progress supply ship July 12, 2011 in space. Space shuttle Atlantis has embarked on a 12-day mission to the International Space Station where it will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts. This was the final mission of the space shuttle program, which began on April 12, 1981 with the launch of Colombia.  (Photo by NASA via Getty Images)

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IN SPACE - JUNE 16: (EDITORIAL USE ONLY) (NO SALES) This handout image supplied by the European Space Agency (ESA), shows the Soyuz TMA-19M spacecraft attached to the International Space Station, on June 16, 2016. The Soyuz TMA-19M spacecraft flew ESA astronaut Tim Peake, commander Yuri Malenchenko and NASA's Tim Kopra out to the ISS for their six month mission on December 15, 2015. The astronauts are scheduled to return to earth June 18 in their Soyuz TMA-19M spacecraft and land near Zhezkazgan, Kazakhstan. (Photo by Tim Peake/ESA/NASA via Getty Images)

IN SPACE  - JUNE 16: (EDITORIAL USE ONLY) (NO SALES) This handout image supplied by the European Space Agency (ESA), shows the Soyuz TMA-19M spacecraft attached to the International Space Station, on June 16, 2016. The Soyuz TMA-19M spacecraft flew ESA astronaut Tim Peake, commander Yuri Malenchenko and NASA's Tim Kopra out to the ISS for their six month mission on December 15, 2015. The astronauts are scheduled to return to earth June 18 in their Soyuz TMA-19M spacecraft and land near Zhezkazgan, Kazakhstan.  (Photo by  Tim Peake/ESA/NASA via Getty Images)

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IN SPACE - MAY 23: In this handout image provided by the European Space Agency (ESA) and NASA, the International Space Station and the docked space shuttle Endeavour orbit Earth during Endeavour's final sortie on May 23, 2011 in Space. Italian astronaut Paolo Nespoli captured the first-ever images of an orbiter docked to the International Space Station from the viewpoint of a departing vessel as he returned to Earth in a Soyuz capsule. (Photo by Paolo Nespoli - ESA/NASA via Getty Images)

IN SPACE - MAY 23:  In this handout image provided by the European Space Agency (ESA) and NASA, the International Space Station and the docked space shuttle Endeavour orbit Earth during Endeavour's final sortie on May 23, 2011 in Space. Italian astronaut Paolo Nespoli captured the first-ever images of an orbiter docked to the International Space Station from the viewpoint of a departing vessel as he returned to Earth in a Soyuz capsule.  (Photo by Paolo Nespoli - ESA/NASA via Getty Images)

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LONDON, ENGLAND - JANUARY 26: British astronaut Tim Peake poses with the Soyuz TMA-19M descent module which he used to return from the International Space Station, as it is unveiled at the Science Museum on January 26, 2017 in London, England. The Soyuz TMA-19M carried astronauts Yuri Malenchenko (Commander, Russia), Tim Kopra (Flight Engineer, USA) and Tim Peake (Flight Engineer, UK) to the International Space Station on 15 December 2015 and returned the same crew to Earth on 18 June 2016. Major Peake also announced that he is to return to space on a second mission to the International Space Station. (Photo by Leon Neal/Getty Images)

LONDON, ENGLAND - JANUARY 26:  British astronaut Tim Peake poses with the Soyuz TMA-19M descent module which he used to return from the International Space Station, as it is unveiled at the Science Museum on January 26, 2017 in London, England. The Soyuz TMA-19M carried astronauts Yuri Malenchenko (Commander, Russia), Tim Kopra (Flight Engineer, USA) and Tim Peake (Flight Engineer, UK) to the International Space Station on 15 December 2015 and returned the same crew to Earth on 18 June 2016. Major Peake also announced that he is to return to space on a second mission to the International Space Station. (Photo by Leon Neal/Getty Images)