This pulsar got slammed by a billion-ton asteroid

You know when you're having a bad day when you get hit by a billion-ton asteroid. But for a pulsar 37,000 light-years away, it's just a another day at the office. And besides, PSR J0738-4042 has an uber-powerful X-ray blaster to deal with errant space rocks. » 2/21/14 7:20am 2/21/14 7:20am