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 detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995.
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,"...
What Is an Exoplanet? | NASA Space Place – NASA Science for …
2024年12月5日 · What Is an Exoplanet? The Short Answer: All of the planets in our solar system orbit around the Sun. Planets that orbit around other stars are called exoplanets. Exoplanets are very hard to see directly with telescopes. They are hidden by …
What is an exoplanet? - NASA Science
The worlds orbiting other stars are called “exoplanets,” and they come in a wide variety of sizes, from gas giants larger than Jupiter to small, rocky planets about as big around as Earth or Mars. They can be hot enough to boil metal or locked in deep freeze.
In Depth: Exoplanets - Science@NASA
An exoplanet, or extrasolar planet, is a planet outside of our solar system that usually orbits another star in our galaxy. What Is an Exoplanet? Exoplanets – planets outside our solar system – are everywhere. But why do we study them? What makes them so interesting?
Exoplanets, worlds beyond the Solar System - The Planetary Society
An exoplanet, short for “extrasolar planet,” is any planet that isn’t in the Solar System. Some are gas giants like Jupiter and Saturn, some are rocky like Mercury or Mars, and others are icy like Neptune or Uranus.
The Big Questions - NASA Science
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-" implying that they are outside of our solar system. detailed answer. Is there life on other planets? Earth is the only planet we know of with life on it...so far.
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 orbit much closer to their host star than Mercury does to our Sun.
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 - WorldAtlas
2024年9月22日 · An exoplanet, or extrasolar planet, is simply a planet located outside our solar system, orbiting a star other than our Sun (which is also a star). Although the term may seem reminiscent of science fiction, numerous exoplanets have been verified, a fact made possible by advancements in telescopic and other Astro-related technologies .