태양계 밖의 항성 주위를 공전하는 행성.
A planet that orbits a star outside the solar system.
예문:
"The discovery of an Earth-like exoplanet sparked renewed interest in interstellar travel."
"Astronomers use the transit method to detect the presence of an exoplanet as it passes in front of its host star."
"Many exoplanets orbit stars that are much smaller and cooler than our Sun."