Exoplanets are planets that orbit stars outside our solar system. Some may be rocky and Earth-like, while others are gas giants or ice worlds. Scientists use telescopes to detect these distant planets and study their atmospheres for signs of life.
Thousands of exoplanets have been discovered, many within the habitable zone of their stars. Future missions aim to analyze their chemical compositions and search for biosignatures. The discovery of an Earth-like exoplanet could change our understanding of life in the universe.