What Is an Exoplanet? | NASA Space Place – NASA Science for …
2025年1月14日 · All of the planets in our solar system orbit around the Sun. Planets that orbit around other stars are called exoplanets.
Exoplanet - Wikipedia
An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not then recognized as such. The first confirmed …
Exoplanets: Everything you need to know about the worlds …
2023年11月14日 · Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" derives from the term "extrasolar planet,"...
Exoplanets - NASA Science
4 天之前 · An exoplanet is any planet beyond our solar system. Most of them orbit other stars, but some free-floating exoplanets, called rogue planets, are untethered to any star. We’ve …
The Big Questions - NASA Science
2024年10月29日 · What is an exoplanet? An exoplanet is a planet outside our solar system, usually orbiting another star. They are also sometimes called “extrasolar planets,” “extra-” …
Exoplanets - NASA Science
2023年10月25日 · In little more than a generation, we’ve gone from knowing only of our own solar system to finding thousands of more distant worlds, known as exoplanets. As new exoplanet …
Extrasolar planet | Definition, Detection, Properties, & Facts
2024年12月27日 · extrasolar planet, any planetary body that is outside the solar system and that usually orbits a star other than the Sun. Extrasolar planets were first discovered in 1992. More …
ESA - What are exoplanets? - European Space Agency
An exoplanet is a planet outside our own Solar System, sometimes referred to as an extrasolar planet. More than 5000 exoplanets have been confirmed. Some are massive, like Jupiter, but …
Exoplanets are worlds orbiting other stars - EarthSky
2024年7月7日 · Exoplanets are far, far outside our own solar system. Astronomers have confirmed more than 5,000 exoplanets orbiting distant stars.
Exoplanets 101 - National Geographic Society
2024年5月22日 · Exoplanets are worlds that exist outside of our solar system. Also known as extrasolar planets, these bodies often orbit their own stars, with some being a part of entire …