An unmanned Russian supply craft transporting food and scientific equipment has docked at the International Space Station, two days after taking off from the Baikonur space center in Kazakhstan.

Russian space officials say the Progress M-54 craft carried more than two tons of food, water, fuel, technical supplies and a new oxygen generating unit to U.S. astronaut John Phillips and Russian Cosmonaut Sergei Krikalev aboard the station.

A Russian spacecraft is to blast off October 1 bringing astronaut William McArthur and cosmonaut Valery Tokarev to replace the current crew who have been aboard the station since April.

U.S. scientist Gregory Olsen will accompany the new crew after paying the Russian space agency $20 million for the chance to make a week-long trip to the space station.

Some information for this report provided by AP, AFP and Reuters.