The majority of detected exoplanets are giant planets. High multiplicity planet systems are much more likely to have habitable exoplanets. The telescope will attempt to image Earthlike exoplanets, which may be possible. Atmospheres have been detected around several exoplanets. This is a list of potentially habitable exoplanets and possible exoplanets. On 22 February 2017, astronomers announced four additional exoplanets around TRAPPIST-1. Kasting was the first to present a detailed model for the habitable zone for exoplanets. These observations were then used to develop methods for habitability studies of exoplanets. The existence of exomoons around many exoplanets is theorized. There are many methods of detecting exoplanets. This is the radial velocity method of detecting exoplanets. COROT discovered about 30 new exoplanets. As of February 2, 2019, there was 3,891 confirmed exoplanets discovered. In some respects,TRAPPIST-1d is one of the most Earth-like exoplanets found. Recently the techniques of singular optics have been applied in the search for exoplanets.