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AstronomyMotion of two nearby galaxies clouds the picture
The Large and Small Magellanic Clouds are not gravitationally bound to the Milky Way, but are relative newcomers passing by for the first time.
By Ron Cowen -
Planetary ScienceTitan: Land of lakes—and drizzle
A newly assembled mosaic of radar images of Saturn's moon Titan shows what appear to be hydrocarbon lakes and seas.
By Ron Cowen -
ChemistryPlatinumfree fuel cell
Cheaper than a typical hydrogen fuel cell, a new, platinumfree cell runs on a "green" liquid fuel.
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19891
This article describes hydrazine hydrate as a benign and cost-effective alternative fuel to hydrogen.