How to Give Mars an Atmosphere, Maybe
The plan for an artificial Martian magnetosphere may sound “fanciful,” but researchers say that emerging research is starting to show that a miniature magnetosphere can be used to protect humans and spacecraft.NASA Earth is most fortunate to have vast webs of magnetic fields surrounding it. Without them, much of our atmosphere would have been gradually […]
The Mystery of the Missing Frost
On some clear winter mornings, we are treated to one of the highlights of the season: a thin layer of white frost delicately coating surfaces like individual grass blades. But even when a veneer of ice crystals encrusts much of the outdoor landscape, you may notice it missing from certain sites—the grass beneath a pine […]
Born of Meteor Dust, Unusual Clouds Appear in the Night Sky
Martin Koitmäe via Flickr If you look to the darkening sky after the end of a long summer day, you might see tendril-like clouds with a blueish tinge that hang at the edge of space. They appear when conditions are right, generally at latitudes close to the North or South Poles, and only when the […]
As the Earth Turns
Whether measured in milliseconds or megayears, the world is in constant motion.