New observations have shed light on the ways galaxies continuously recycle immense volumes of hydrogen gas and heavy elements, allowing them to build successive generations of stars.
Source: http://www.cosmosmagazine.com/news/5004/galaxies-are-ultimate-recyclers
Alecia Elliott Alessandra Ambrosio Alexis Bledel Ali Campoverdi Ali Larter Alice Dodd Alicia Keys
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