Dec 1, 2011Roughly 5 billion years from now, the Sun will begin to swell as a red giant. But life on Earth will feel the effects of an aging Sun long before then. What can we do to survive?
Dec 1, 2011As space agencies around the world gear up for a return of humans to the Moon, researchers are beginning to outline important scientific priorities. A new study at an impact crater in Canada is helping mission planners develop the most effective methods for exploring the