木もく星せい型がた惑わく星せい

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Meanings

1

noun

gas giant

astronomy

In a narrower astronomical classification, refers specifically to Jupiter and Saturn, which are composed mainly of hydrogen and helium. Contrasted with 天王星型惑星 (ice giants).

See also: 天王星型惑星

木もく星せい型がた惑わく星せいには、木もく星せいと土ど星せいが分ぶん類るいされる。

Jupiter and Saturn are classified as gas giants.

2

noun

giant planet; Jovian planet

astronomy

In a broader sense, includes all four outer planets: Jupiter, Saturn, Uranus, and Neptune. This usage is common in older or less technical contexts.

太たい陽よう系けいの木もく星せい型がた惑わく星せいは、木もく星せい、土ど星せい、天てん王のう星せい、海かい王おう星せいの四よっつである。
The giant planets in our solar system are Jupiter, Saturn, Uranus, and Neptune.