An exoplanet, short for “extrasolar planet,” is a planet that orbits a star outside our solar system. These planets are located beyond our Sun’s system and can orbit around other stars in our Milky Way galaxy.
The discovery of exoplanets has expanded our understanding of planetary systems and the diversity of worlds that exist beyond our own. Scientists detect exoplanets through various methods, including the transit method (observing the dimming of a star as a planet passes in front of it), the radial velocity method (detecting a star’s slight wobble due to the gravitational pull of an orbiting planet), direct imaging, and gravitational microlensing.
Exoplanets come in various sizes, compositions, and orbits. Some may resemble Earth in size and potential habitability, while others could be gas giants, super-Earths, or ice giants. Finding exoplanets within their star’s habitable zone—where conditions might support liquid water and, potentially, life as we know it—remains a significant focus in exoplanetary research. Studying these distant worlds provides valuable insights into planetary formation, evolution, and the possibility of life beyond Earth.
