Scientists say they're closer to discovering the origins of chondrules -- glass beads -- that were the first solids to appear in our solar system. A study published in the Astrophysical Journal Letters found that electric currents traveling through the dust cloud around the sun caused rocks to melt early in the solar system's history. This might help explain how chondrules, which were found far from the sun, were able to heat up to 2,420 degrees Fahrenheit despite being in a colder environment, scientists say.

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