A Russian Soyuz 2-1a rocket rolled out to its launch pad Oct. 22 at the Baikonur Cosmodrome with the Progress MS-21 cargo ship. Credit: Roscosmos
Russia is set to launch a Progress supply freighter Tuesday on a two-day trek to the International Space Station to deliver 5,556 pounds (2,520 kilograms) of cargo, fuel, water, and nitrogen to the orbiting research laboratory.

