To date (October 2021, data from https://exoplanets.nasa.gov/), astronomer discovered enough exoplanets (in excess of 4500) to allow not only analysis of individual planets, but also detailed studies of the whole exoplanets population. These studies are necessary to fully understand the process of planets formation, the evolution of planets, the chemical composition and physical properties of planets atmospheres, and how the forming
The discovery of the first planet orbiting around another star occurred in the 1995, thanks to the astronomers Michel Mayor and Didier Queloz. This discovery set a milestone in astronomy both because it was the first observational confirmation of the existence of planets orbiting around other stars (in this case 51 Pegasi), and because of the nature of this exoplanet. It
