The ICC portion of ATV Albert Einstein being weighed at Kourou space center, French Guiana, January 16, 2013. The European Space Agency's Albert Einstein cargo craft, is the fourth and penultimate in a series of hi-tech lifeline vessels bringing supplies and critical altitude boosts to the International Space Station.

A robot freighter bearing 6.6 tonnes of cargo docked with the International Space Station (ISS) on Saturday, the European Space Agency (ESA) said.

The fourth of ESA's Automated Transfer Vehicles (ATVs) berthed with the ISS 10 days after being launched by  from Europe's spaceport in Kourou, French Guiana, it said.

The resupply ship, named after , is laden with food, water, oxygen, science experiments and special treats for the ISS astronauts.

It made contact with the ISS at 1407 GMT, the ESA said, about 20 minutes later than originally expected.

The robot space freighter is the size of a double-decker bus—10 metres (33 feet) long and 4.5 metres (15 feet) in diameter.

It is designed to find its way automatically to the ISS, navigating by starlight and using its onboard thrusters to gently dock with the manned orbital outpost.

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