Number 62 (Story #2), January 10, 1992 by Phillip F. Schewe and Ben Stein MORE PLANETS AROUND PULSARS have been found by radio astronomers. Alexander Wolszczan of the Arecibo Observatory (809-878-2612) in Puerto Rico and Dale Frail of the National Radio Astronomy Observatory in New Mexico report evidence for two and possibly three planets around the pulsar PSR 1257+12. The two more substantially inferred planets have orbits about the size of Mercury's around our Sun, whereas the third planet, if it exists, has an orbit about the size of Earth's. Support for the planet hypothesis comes in the form of the measured delay in the expected arrival of radio waves from PSR 1257+12. This was the case also with the report of the first such pulsar/planet system, PSR 1829-10, announced last summer by astronomers in Britain. (Nature, 9 January 1992.)