hot Jupiter

noun

Astronomy.

1. any of a class of large, hot, gaseous planets similar to Jupiter in mass but outside our solar system.

hot Jupiter

1. See under extrasolar planet

Example Sentences

WASP-43 b is a "hot Jupiter" type of exoplanet: similar in size to Jupiter, made primarily of hydrogen and helium, and much hotter than any of the giant planets in our own solar system.

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That makes it what astronomers call a Hot Jupiter, a common type of exoplanet.

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Silicates are exceptionally common — all the rocky bodies in the solar system are made from them, and silicates have previously been detected in the atmospheres of hot Jupiter exoplanets before.

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The plot, or spectrum, reveals detailed information about the atmosphere of the exoplanet WASP-39b, called a ‘hot Jupiter’ by scientists because it is slightly wider in diameter than Jupiter but orbits its star much more closely than Mercury orbits the Sun, making it unbearably hot.

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Luis Calçada, a science visualization artist who works with the European Southern Observatory, chose another hot Jupiter: Vega b.

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