On November 20, 1998, the Zarya module was launched aboard a Russian-built Proton launcher from the Baikonur Cosmodrome in Kazakhstan. The new International Space Station’s initial module was this one. Imagination: Sergei KarpukhinPost to Facebook Post to Twitter

After exiting the cargo bay of the space shuttle Endeavour in 1998, the US- and Russian-built Zarya (L) and Unity modules are seen hovering close to Earth’s horizon.Image credit: NASA/ReutersPost to Facebook Post to Twitter

As work on the International Space Station restarts in 2008, mission specialists Robert L. Curbeam, Jr. (left) and Christer Fuglesang take part in the mission’s first of three planned sessions of extravehicular activity.Photo by NASAPost to Facebook Post to Twitter

Before landing with the International Space Station in 2010, a member of the Expedition 22 crew captured this image of the space shuttle Endeavour silhouetted against the backdrop of Earth’s horizon.Picture: NASA/Nasa/ReutersPost to Facebook Post to Twitter

Two spacewalks were conducted on December 24, 2013, with astronaut Mike Hopkins, Expedition 38 Flight Engineer, taking part in the second of those two. The crew’s ability to replace a broken water pump on the outside of the Earth-orbiting International Space Station was intended to be accomplished during the spacewalks.Picture: NASA/Nasa/ReutersPost to Facebook Post to Twitter

On May 12, 2013, astronaut Chris Hadfield of the Canadian Space Agency performed a new rendition of the David Bowie song Space Oddity inside the International Space Station.NASA/CSA/CHRIS HADFIELD/HANDOUT/EPA photoShare on Twitter Share on Facebook

Barry Wilmore of the US, Alexander Samokutyaev, and Elena Serova of Russia were aboard the Soyuz TMA-14M spacecraft, which was spotted above clouds in 2015 as it descended beneath a parachute just before landing southeast of Dzhezkazgan.Image credit: NASA/REUTERSPost to Facebook Post to Twitter

Photographers captured the 2015 launch of the Russian Soyuz TMA-19M spacecraft from the launch pad at the Russian-leased Baikonur cosmodrome, carrying the International Space Station Expedition 46/47 crew of British astronaut Tim Peake, Russian cosmonaut Yuri Malenchenko, and US astronaut Tim Kopra.Photos: AFP/Getty Images/Kirill KudryavtsevShare on Twitter Share on Facebook

On October 3, 2016, astronauts on the International Space Station took a collection of stunning star trail pictures.Photo by NASAShare on Twitter Share on Facebook

Discovery after it disengaged from the International Space Station.Picture: NASA/Nasa/ReutersPost to Facebook Post to Twitter

This 2014 image from the International Space Station shows Hurricane Arthur’s eye over the Atlantic.Picture: NASA/Nasa/ReutersPost to Facebook Post to Twitter

In 2008, astronaut Karen Nyberg peered out of a window of the International Space Station’s brand-new Kibo laboratory.Picture: NASA/Nasa/ReutersShare on Twitter Share on Facebook

A space station crew member took a picture on July 26, 2017, of one of the 16 sunrises the Expedition 52 crew sees each day while orbiting the Earth.Picture: NASA/Nasa/ReutersPost to Facebook Post to Twitter

Earth as seen from the Cupola on the International Space Station’s Earth-facing side on June 12, 2013. A Russian Soyuz crew capsule can be seen in the top left foreground. A solar array panel may be seen in the lower right corner.Picture: NASA/Nasa/ReutersShare on Twitter Share on Facebook

Aurora was captured by European Space Agency astronaut Alexander Gerst on August 29, 2014, and uploaded to social media from the International Space Station.Image credit: NASA/ReutersShare on Twitter Share on Facebook

In 2016, the supermoon rose in front of a Soyuz rocket at the Baikonur Cosmodrome in Kazakhstan.NASA/Bill Ingalls (NASA/Bill Ingalls) imageShare on Twitter Share on Facebook

On the Combined Operational Load Bearing External Resistance Treadmill (COLBERT), also known as the Treadmill 2, astronaut Luca Parmitano works out.Photo by NASAPost to Facebook Post to Twitter

After disengaging from Discovery in 2001, the International Space Station’s solar arrays are illuminated against the blackness of space.Photo credit: APPost to Facebook Post to Twitter

Anousheh Ansari, a space tourist, sits in her seat on the Soyuz spacecraft as it travels to the International Space Station in 2006.Image credit: NASA TV/ReutersPost to Facebook Post to Twitter

An image of London at night taken in February 2003 from the International Space StationPicture by HO/REUTERSShare on Twitter Share on Facebook

In the Unity node of the International Space Station in 2013, Canadian Space Agency astronaut Chris Hadfield, Expedition 34 flight engineer, observes a water bubble float freely between him and the camera.Image credit: NASA/ReutersPost to Facebook Post to Twitter

In 2000, the Soyuz rocket was transported to the launch pad at the cosmodrome Baikonur, Kazakhstan, under the supervision of the launch team in preparation for the historic manned trip to the International Space Station.Image credit: EPA/Sergei ChirikovPost to Facebook Post to Twitter

The International Space Station was photographed in 2006, just after the space shuttle Atlantis undocked from the orbital outpost, over a blue and white Earth.Photo by NASAPost to Facebook Post to Twitter