Astronomer har använt NASA: s rymdteleskop Hubble för att mäta den materia som rymdsonderna Voyager 1 och 2 sonder färdas igenom bort från solsystemet.

On the left is the Soyuz TMA-19M spacecraft that bought Tim Peake, NASA astronaut Tim Kopra and commander Yuri Malenchenko to the Space Station on 15 December 2015. It docked to the Russian Rassvet module after Yuri manually approached and made contact with the International Space Station. Next to the Soyuz is the Cygnus supply spacecraft that arrived at the Space Station six days before the Tims and Yuri on 9 December. Cygnus is uncrewed and flies to the Space Station in an automated mode.

Thomas Pesquet - vår egen ESA-astronaut - gör sin första rymdpromenad. Följ live när han och Shane Kimbrough ersätter rymdstationens ISS batterier.

The Earth view from the cupola onboard the International Space Station. NASA astronaut Scott Kelly tweeted this image with a comment on May 14, 2015: “My first look out the window today.

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This image shows a lentil seedling root that grew on the International Space Station before being preserved in resin and cut along its length for analysis. The purple dots are starch-filled statoliths that usually drop towards gravity, but this plant grew in space and the statoliths are floating in the middle of their cells.

Luca Parmitano floats through the hatch into the International Space Station

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The International Space Station is a sprawling complex the size of a football field. However, after decades of designs, redesigns and being placed in a less-than-optimal orbit - is the complex worth the $100 billion price tag? Image Credit: NASA

In this image provided by NASA the Soyuz spacecraft is seen as it lands with Expedition 35 Commander Chris Hadfield of the Canadian Space Agency, NASA Flight Engineer Tom Marshburn and Russian Flight Engineer Roman Romanenko of the Russian Federal Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Tuesday, May 14, 2013. (AP Photo/NASA, Carla Cioffi)

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ESA astronaut Alexander Gerst tests a spacesuit at NASA’s Johnson Space Center in Houston, USA.

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ESA's ATV-4 Albert Einstein burns as it re-enters Earth's atmosphere 4 Nov. #ESA #EuropeanSpaceAgency

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