Surprising chemical complexity of Saturn's rings changing planet's upper atmosphere

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A new study based on data from the final orbits last year of NASA's Cassini spacecraft shows the rings of Saturn -- some of the most visually stupendous objects in the universe -- are far more chemically complicated than previously was understood.
via Science Daily
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Newly detected microquasar gamma-rays 'call for new ideas'

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The first-ever detection of highly energetic radiation from a microquasar has astrophysicists scrambling for new theories to explain the extreme particle acceleration. A microquasar is a black hole that gobbles up debris from a nearby companion star and blasts out powerful jets of material.
via Science Daily
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Observations challenge cosmological theories

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Since the big bang, fewer galaxy clusters have formed over time than was actually expected. Physicists from the have now confirmed this phenomenon. For the next years the researchers will analyze their data in even greater detail. This will put them in a position to confirm whether the theories considered valid today need to be reworked.
via Science Daily
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Sky survey reveals first 'orphan' gamma ray burst

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Object in distant galaxy most likely is a gamma ray burst whose beams of gamma rays were pointed away from Earth and thus not detected. Radio afterglow's behavior over time, however, is what's expected from a gamma ray burst.
via Science Daily
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