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
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?