SpaceScience with Sam: What would happen if there was no moon? The moon may seem little more than a boring piece of rock, barely worth keeping. But it may be the reason for our existence. Join Sam as he explores Earth's shiny sidekick Video
SpaceEnormous kites flown by robots could help power a Mars colony A proposal to power a future Mars base includes an enormous kite flown by robots, along with solar power and a battery that stores energy by compressing gas underground News