Space Station

A Japanese H-2B rocket fired into orbit Tuesday from the Tanegashima Space Center with an automated cargo freighter loaded with more than 4.1 tons of batteries, experiments, spacewalk equipment, water and provisions for the International Space Station.

Mitsubishi Heavy Industries, the prime contractor for Japan’s H-2B rocket, said Friday that engineers concluded a fire on the launch pad during a countdown earlier this month was most likely sparked by static electricity and stimulated by oxygen. The H-2B rocket launch has been rescheduled for Tuesday to start a resupply mission to the International Space Station.

Japanese officials called off the launch of an H-2B rocket and HTV space station cargo ship Tuesday after a fire broke out on the launch pad at the Tanegashima Space Center.

These photos show the stacking of Japan’s eighth H-2B rocket inside an assembly building at the Tanegashima Space Center over the past few weeks, followed by rollout of the 186-foot-tall vehicle to its launch pad Tuesday.

A Japanese HTV cargo freighter is set for launch Tuesday (U.S. time) aboard a powerful H-2B rocket, ferrying six new lithium-ion batteries, a Sony-developed laser communications terminal, fresh water and other equipment to the International Space Station.