The first satellite-servicing spacecraft named “MEV-1” (Mission Extension Vehicle-1) was launched on the Russian Proton rocket that took off from Russia’s launching site for spacecraft in Kazakhstan.
It was developed by Northrop Grumman, US in partnership with NASA partnership called Collaborations for Commercial Space Capabilities.
The MEV functions in tracking down and connecting to any satellite in space that’s running low on fuel and replenish its supply.
So, it aims to extend the life of commercial satellites that are currently in a geostationary orbit around Earth.