The gaseousmass or envelope surrounding a celestial body, especially the one surrounding Earth, and retained by the celestial body's gravitational field .
大气层指环绕天体的气团或气层，尤指环绕地球的气团，被天体重力场所束缚。
2
WASP-12b is a gaseous planet, about 1.5 times the mass of Jupiter, and almost twice the size.
WASP - 12 b是一颗气态行星，大约是木星质量的1.5倍，体积的2倍。
3
Estimates of their mass also indicate that they are rocky planets, rather than being gaseous like Jupiter.