European cargo ship docks with space station

Image: ATV-3 docking
The European Space Agency's ATV-3 cargo spaceship, nicknamed Edoardo Amaldi, closes in on its docking port on the International Space Station's Zvezda service module on Wednesday.NASA TV
/ Source: Space.com

After a five-day orbital chase, a huge robotic European cargo ship arrived at the International Space Station on Wednesday.

The European Space Agency's third Automated Transfer Vehicle, ATV-3, automatically docked to the complex at 6:31 p.m. EDT, delivering roughly 7 tons of supplies for the crew of the orbiting outpost.

The ATV-3 launched into space on March 23 from Europe's South American spaceport in Kourou, French Guiana. Over the past several days, as the cargo ship chased the space station in orbit, some lucky skywatchers around the world have been able to snap photos of the ATV-3 from Earth as it sailed overhead.

The unmanned cargo freighter is carrying the heaviest load ever delivered to the space station by a robotic spacecraft, officials from the European Space Agency said in a statement.

The cylindrical, 13-ton cargo ship is 35 feet (10.7 meters) long and 14.7 feet (4.5 meters) wide — large enough to fit a double-decker bus inside. It is filled to the brim with food, water, clothing, experiments and fuel for the space station, ESA officials said. [Dazzling Night Launch Photos of Europe's ATV-3]

The ATV is designed to automatically dock to the Zvezda module on the Russian segment of the International Space Station. The disposable cargo ships remain attached to the complex for up to six months before they are filled with garbage and deliberately sent to burn up during atmospheric re-entry.

ATV-3 is nicknamed Edoardo Amaldi, after the celebrated Italian physicist who helped unify Europe's spacefaring efforts under what is now the European Space Agency. Amaldi is also one of the founding fathers of CERN, the particle physics laboratory along the Swiss-French border that houses the Large Hadron Collider.

The ATV vehicles are routinely named after historical figures in astronomy or space exploration. ESA's first ATV was named Jules Verne, and made its maiden voyage to the space station in 2008. The agency's ATV-2, Johannes Kepler, successfully followed in 2011.

Europe's next two planned ATVs, named ATV-4 Albert Einstein and ATV-5 Georges Lemaitre, are scheduled to launch to the International Space Station in 2013 and 2014, respectively.

The ATVs are part of an international fleet of disposable, unmanned cargo ships that are used to carry supplies and hardware to the space station. Several other spacecraft, including Russia's robotic Progress ships and Japan's H-2 Transfer Vehicles (HTVs), also regularly make trips to the orbiting outpost.

This report was updated by msnbc.com. Follow Space.com for the latest in space science and exploration news on Twitter and on .