
Earlier this year, the number of discovered exoplanets reached 5,000. This milestone comes 30 years after the discovery of the first exoplanet in 1992. But, which exoplanet was the first exoplanet to be discovered is not as clear as it may seem.

Earlier this year, the number of discovered exoplanets reached 5,000. This milestone comes 30 years after the discovery of the first exoplanet in 1992. But, which exoplanet was the first exoplanet to be discovered is not as clear as it may seem.