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Venus Express goes gently into the night

ESA's Venus Express has ended its eight-year mission after far exceeding its planned life. The spacecraft exhausted its propellant during a series of thruster burns to raise its orbit following the low-altitude ...

dateDec 17, 2014 in Space Exploration
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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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Air pollution in Antarctica

While Antarctica remains one of the cleanest places in the world, increasingly large amounts of natural and man-made atmospheric pollutants are finding their way to the frozen continent. Pollutants enter ...

dateDec 05, 2014 in Environment
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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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