Planeettapyöristä

Planeettapyöristä, also known as exoplanets, are planets that orbit stars outside our solar system. The first confirmed detection of an exoplanet occurred in 1992, and since then, thousands of exoplanets have been discovered. These planets vary greatly in size, composition, and distance from their host stars. Exoplanets can be classified into several categories, including gas giants, ice giants, super-Earths, and mini-Neptunes. The study of exoplanets is a rapidly evolving field of astronomy, with new discoveries and advancements in technology continually expanding our understanding of these distant worlds. Techniques such as the transit method and radial velocity method are commonly used to detect exoplanets. The transit method involves observing the slight dimming of a star's light as a planet passes in front of it, while the radial velocity method detects the wobble of a star caused by the gravitational pull of an orbiting planet. The discovery of exoplanets has raised intriguing questions about the potential for extraterrestrial life and the diversity of planetary systems in the universe.