Being a participant of the XXVIII Planetary Congress of the Association of Space Explorers, Russian cosmonaut Oleg Artemjev sent this letter from Sweden to Russia. Then the letter was delivered to the International Space Station to Russian cosmonaut Sergey Volkov. 

The letter was delivered to the ISS by the Russian “Progress MS-01” unmanned supply spacecraft. To document the delivery, the letter was postmarked with all proper board seals dated 23 December 2015, the day when the “Progress MS-01” spacecraft docked to the Space Station. During more than 37 years of space ... Read more »

On June 4, 2017, the US "Cygnus” (CRS OA-7 “John Glenn”) unmanned supply spacecraft was undocked from the International Space Station. The spacecraft, which had been attached to the space station since April 22, 2017, was released by astronauts aboard the station using the orbiting complex's huge robotic arm at 13:10 UTC. American astronauts Jack Fisher and Peggy Whitson managed the departure procedures from a robotics work station inside the cupola module. It was the 7th successful flight of "Cygnus” to the ISS. But Cygnus CRS-7 spacecraft’s mission is not over.

On June 3, 2017 at 21:07 UTC the "Falcon 9” rocket-carrier was launched from LP-39A of the Kennedy Space Center at Cape Canaveral, Florida. The launch was performed by the "SpaceX” private company. US private company SpaceX launched its "Dragon” (CRS-11 flight also known as SpX-11) unmanned spacecraft on a cargo resupply mission to the International Space Station. CRS means Commercial Resupply Services. It is the 12th successful flight of a “Dragon” spacecraft and the 11th successful flight of a “Dragon” to the ISS.