An artist's illustration of the pulsar PSR B0943+10, a spinning star 3,000 light-years from Earth that shifts between beaming out X-rays and radio waves.
Scientists have discovered a puzzling spinning star that is
spontaneously switching between two very different personalities,
flipping between emitting strong X-rays and emitting intense radio
waves.
While radio frequencies are known to vary as the star changes
personalities, the newfound star is the first time example of
variability in X-rays as well. The star, called a pulsar because it appears to pulse, has astronomers perplexed.
For the rest of the story: http://www.livescience.com/26583-weird-pulsar-defies-theories.html
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