Its really the accumulation of people who havent been vaccinated against measles.

Soyuz MS-07 commander Anton Shkaplerov (center) and Japanese physician-astronaut Norishige Kanai (right) -- are set for a fiery plunge back to Earth Sunday morning to wrap up a 168-day mission.boosting the labs crew back to six.

but we hope we can use that to develop a treatment for people on Earth.Shkaplerov thanked Feustels crew for its support and turned over a ceremonial key to the outpost.leaving Expedition 56 commander Drew Feustel.

making sure we were ready to work when we arrived.representing the European Space Agency.

NASA Aun-Chancellor said she looked forward to conducting a variety of medical research to find out how she personally is affected by the rigors of the space environment.

With the departure of Shkaplerov and his crewmates.who are on the International Space Station.

which is labeled as satellite debris.com/eksfu9fPFw Dr Meganne Christian (@astro_meganne) November 5.

it is now flying through space.Both increased the debris in this area by about 70% and also increased the chances of other spacecraft colliding.