What’s the Universe Made Of?

How much of you lies among the stars? How are the elements that make up life distributed among stars and planets? As trippy as the questions seem, astronomers from the Sloan Digital Sky Survey (SDSS) announced today at the 229th meeting of the American Astronomical Society that they knew the answers — or, at least, were starting to learn them.

SDSS, “the energizer bunny of sky surveys,” according to spokesperson Karen Masters, is a massive data collection project that’s been going on for

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