First known exoplanets have few counterparts
Pulsar survey finds no new examples of orbiting worlds
![pulsar PSR B1257+12](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/09/090315_cc_pulsar_free.jpg?fit=860%2C460&ssl=1)
RARE FIND The three rocky planets around pulsar PSR B1257+12 (illustrated) were the first confirmed exoplanets. Pulsar-orbiting planets are quite rare, a new survey suggests.
JPL-Caltech/NASA