Exoplanets were first observed in:

Name: Exoplanets were first observed in:
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Exoplanets (planets outside our solar system) were first observed by Aleksander Wolszczan and Dale Frail in 1992 using radio telescopes to detect the presence of two planets orbiting a pulsar. While there were earlier claims of exoplanet observations, it was not until 1992 that the first confirmed exoplanet discovery was made.

Exoplanets Were First Observed In