Extrasolar planets *

The discovery of the first planet outside of our own solar system was announced on 9 January 1992, by radio astronomers Aleksander Wolszczan and Dale Frail. The planet orbits a pulsar and was detected from variations in the pulsar’s period, due to the gravitational influence of the planet.

Since then, thousands of extrasolar planets (or exoplanets) have been detected via various means.

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Astronomy, Cosmology, Astrophysics and Space Exploration

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