Illustration of the Transiting Exoplanet Survey Satellite (TESS). TESS was launched by NASA in April 2018, the successor to Kepler. It has a two-year mission, during which it will be hunting for extrasolar planets transiting their stars. It is...

Kepler 438b is an Earth-like extrasolar planet orbiting the star Kepler 438, some 470 lightyears away in Lyra. The planet has an ESI (Earth Similarity Index) of 0. 88, the highest currently measured.

Illustration of the planet Kepler 1625b and its proposed exomoon. Kepler 1625 is a Sun-like star some 4, 000 light-years distant in Cygnus. It is about 80 percent of the radius of the Sun but about 8 percent more massive. The star has at least one...

Illustration of a circumbinary planet. This is a planet in orbit around not one, but two stars, orbiting their centre of mass. Examples of such planets include PSR B1620-26, HD 202206, HW Virginis, Kepler-16 and Kepler-453.

Artist's concept illustrating the two Saturn-sized planets discovered by the Kepler mission.

Artist's concept of Kepler 22b, an extrasolar planet found to orbit the habitable zone.

A large water covered planet with two moons alone in deep space.

Exoplanet Kepler 1649b, illustration