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NASA vs. cigarettes—a numbers game

People often criticize the amount of money spent on space exploration. Sometimes it's well-meaning friends and family who say that that money is wasted, and would be better spent on solving problems here on Earth. In fact, ...

dateNov 17, 2015 in Space Exploration
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Measuring the mass of a Mars-size exoplanet

Determining the size of an Earth-size exoplanet by the amount of starlight it blocks hundreds of light-years away once was the realm of science fiction. Measuring the mass of such a small planet based on its gravity was ...

dateJun 18, 2015 in Astronomy
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