Number 177 (Story #3), May 3, 1994 by Phillip F. Schewe and Ben Stein THE DETECTION OF PLANETS AROUND A PULSAR has been established with greater certainty by the same astronomer who made a similar claim two years ago. Alexander Wolszczan of Penn State has found new evidence for the presence of two Earth-mass planets around pulsar PSR B1257+12. Using the giant radio dish at Arecibo, Puerto Rico, Wolszczan has for the past three years monitored the pulsar's faint radio signals, which are slightly modulated by the presence of the orbiting bodies. The pattern of signals suggests orbital periods of 67 and 98 days. Hints of a third and a fourth planet are also present in the data. (Science, 22 April 1994.)