News tagged with delta

Delta Cephei's hidden companion

To measure distances in the universe, astronomers use cepheids, a family of variable stars whose luminosity varies with time. Their role as distance calibrators has brought them attention from researchers ...

dateMay 12, 2015 in Astronomy
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Protect the world's deltas

Extensive areas of the world's deltas—which accommodate major cities such as Shanghai, Dhaka and Bangkok—will be drowned in the next century by rising sea levels, according to a Comment piece in this ...

dateDec 03, 2014 in Environment
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