The Sloan Digital Sky Survey III (SDSS-III), an international collaboration that includes Penn State astronomers, has produced the largest-ever three-dimensional map of massive galaxies and distant black holes.
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An analysis of newly sequenced polar bear genomes is providing important clues about the species' evolution, suggesting that climate change and genetic exchange with brown bears helped create the polar bear as we know it today.
A loose group of stars that has been known for more than 180 years but never before studied in detail has been revealed to be an important new tool in the quest to understand the evolution of stars like the Sun, and in the search for planets like Earth.