COLOGNE, Germany: Humans could set foot on Mars within decades if they wanted to, according to the German astronaut who has been tapped to become his country’s first commander of the International Space Station.

Alexander Gerst said the space station offers a unique opportunity to test the technology needed to explore other planets, especially if its lifetime is extended beyond 2020.

“It is very clear to me that those manned missions to the moon and Mars, human missions, will happen,” he said.