Astronomers have found evidence for what might be a planet with about half the mass of the Moon orbiting the pulsar PSR J0337+1715 – this would make it the least massive planet we have ever ...

For the newly discovered pulsar, known as PSR J1719-1438, the astronomers noticed that the arrival times of the pulses were systematically modulated. They concluded that this was due to the ...

In 1992 astronomers reported the first planet-size masses around a dead star, the pulsar PSR1257+12, which sits 2,000 light-years away. Three years later came news of the first known exoplanet ...