Scientistsusing data from NASA’s Kepler Space telescope as well as ground-based observatories have discovered a cache over 100 new exoplanets. In developing the research field of exoplanets and life in the Universe the diverse planets are expected to play a large role. In recent years,Exoplanets which revolve around stars other than the Sun have been actively researched.To confirm exoplanets suggested by the K2 data Astronomers around the world are competing. 227 K2 exoplanet candidates have been investigated by Scientists at the University of Tokyo and National Institutes of Natural Sciences in Japan using other space telescopes and ground-based telescopes. They confirmed that 104 of them are really exoplanets.Seven of the confirmed exoplanets have ultra-short orbital periods less than 24 hours. For advance research into the process the further study of these ultra-short period planets will help. Many low-mass rocky exoplanets with masses less than twice that of the Earth as well as some planetary systems with multiple exoplanets also been confirmed. NASA has officially retired the Kepler Space Telescope, its successor space telescope, called TESS, has already started collecting data. Already many new exoplanets has been found by TESS, and it will continue to discover many more. In front of its parent star if a planet crosses, then the observed brightness of the star drops by a small amount. Using this same method the Kepler Space Telescope detected many. Therefore, the phenomena are really caused by exoplanets is very important.