VIDEO: Expedition 42-43 mission preview

Astronauts Butch Wilmore and Terry Virts suited up and ventured outside the International Space Station on Sunday on their third spacewalk in eight days to install equipment to help future commercial crew capsules built by Boeing and SpaceX navigate to the complex.

Russia launched a Progress resupply mission Tuesday heading for the International Space Station with more than 6,000 pounds of fuel, supplies and experiments to support the lab’s six-person crew, and the automated cargo craft sailed to a smooth link-up with the complex less than six hours later.

The Dragon spaceship poised for launch Tuesday will carry more than 2.5 tons of equipment for the International Space Station’s six-person crew, making the first U.S. supply delivery to the orbiting research complex since the crash of an Antares cargo rocket in October.