News tagged with earth atmosphere

Image: Global cloud fraction map of Earth

Decades of satellite observations and astronaut photographs show that clouds dominate space-based views of Earth. One study based on nearly a decade of satellite data estimated that about 67 percent of ...

dateMay 11, 2015 in Earth Sciences
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How strong is the gravity on Mars?

The planet Mars shares numerous characteristics with our own. Both planets have roughly the same amount of land surface area, sustained polar caps, and both have a similar tilt in their rotational axes, affording ...

dateDec 11, 2014 in Space Exploration
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Land use looms as large factor in global warming

For the world's deteriorating environment, don't blame burning fossil fuels exclusively. Land use and land cover changes contribute about 40 percent to "radiative forcing," a key underlying factor in global warming, according ...

dateDec 04, 2014 in Environment
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Monitoring meteor showers from space

Those who enjoy the spectacle of the Perseids, Geminids or other annual meteor showers likely aren't thinking about where these shooting stars originated or whether they might pose a danger. Scientists, however, ...

dateAug 13, 2014 in Space Exploration
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