The Automated Transfer Vehicle 4 (ATV-4), also known as "Albert Einstein," was the fourth spacecraft in the Automated Transfer Vehicle series developed by the European Space Agency (ESA) for resupply missions to the International Space Station (ISS). Similar to its predecessors, ATV-4 aimed to deliver cargo, supplies, and experiments to the International Space Station (ISS) to support its crew and operations. ATV-4 played a crucial role in resupplying the ISS with essential resources.