The Swiss astrophysicists Michel Mayor and Didier Queloz have been awarded with the 2019 Nobel Prize in Physics for the discovery of the first exoplanet in 1995 together with James Peebles, for his theoretical discoveries in the domain of Cosmological Physics.
On October 6th 1995, the very first exoplanet was discovered at the Observatoire de Haute-Provence, by Swiss scientists Michel Mayor and Didier Queloz using the 1.93-m telescope. This discovery was made possible thanks to the development of the then unique spectrograph Elodie, set up at the focus of the telescope. The instrument had been designed by Geneva Observatory, Marseille Observatory and OHP to measure the radial velocity of stars. Michel Mayor, Didier Queloz and their colleagues have since built successors to Elodie like Sophie at OHP or HARPS at ESO to continue their quest thereby making exoplanet hunting a truly European success.
The Nobel Prize in Physics rewards this historic discovery twenty-four years later, whilst nearly 4000 exoplanets have now been identified.
Updated list of exoplanets discovered : http://exoplanet.eu/