exoplanet

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exoplanet

or

extrasolar planet,

a planet located outside the solar system. See planetplanet
[Gr.,=wanderer], a large nonluminous body of rock or gas that orbits the sun or another star, has a rounded shape due to gravity, and has cleared its orbit of smaller objects.
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; planetary systemplanetary system,
a star and all the celestial bodies bound to it by gravity, especially planets and their natural satellites. Until the last decade of the 20th cent., the only planetary system known was the solar system, which comprises the sun and the surrounding planets,
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.

exoplanet

[‚ek·sō′plan·ət]
(astronomy)
References in periodicals archive ?
The newfound exoplanet, called VB 10b, is about 20 light-years away in Aquila.
The study of exoplanets is just getting started: hundreds may have been found, but scientists think there are millions of new worlds in our galaxy, just waiting to be discovered.
The stated objectives of the book are to explore this new area of science, including the dramatic discoveries of new planets, to seek out how and why those discoveries have been made possible, to highlight where amateur astronomers can contribute to the research, to probe what we know about exoplanets, and to investigate whether we might ever travel to and colonise an exoplanet.
New research following up on the Kepler discoveries shows that alien worlds, or exoplanets, can be divided into three groups-terrestrials, gas giants, and mid-sized "gas dwarfs"-based on how their host stars tend to fall into three distinct groups defined by their compositions.
The team even talked about two exoplanets where they would expect to find exomoons in the future: Gliese 876b, which is about 15 light years away and Epsilon Eridani b, which is about 10.
NASA has selected SpaceX to provide launch services for the Transiting Exoplanet Survey Satellite (TESS) mission.
The relatively new field of exoplanets emerged in 1995 with the discovery of the first exoplanet around a star similar to the sun.
A strange light is emitted as a result and that has allowed researchers to watch a distant exoplanet as it is being formed.
Hazy worlds seem common both in our solar system and in the population of exoplanets we've characterized so far," Arney said.
The ARIEL mission will perform infrared (2-8 micron) spectroscopic observations of 500 warm/hot transiting exoplanets to determine the chemical composition and physical conditions of exoplanet atmospheres.
Over 1,500 known worlds orbit diverse locales throughout the Milky Way, and there's one thing the exoplanets have in common: None of them have names.
Astronomers have discovered nearly 2,000 exoplanets in the past two decades.