A team of astronomers led by Dr Alessandro Papitto from the Institute of Space Studies of Barcelona has discovered a fast-spinning pulsar that switches between emitting X-rays and emitting radio waves. This is the first direct evidence of one kind of pulsar turning into another. This artist’s impression shows PSR J1824-2452I and its companion star. Image credit: ESA. The pulsar, labeled PSR J1824-2452I, lies 18,000 light-years away in a small...