原げん始し惑わく星せい系けい円えん盤ばん

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く

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Meanings

1

noun

protoplanetary disk

astronomy

Technical term in astronomy referring to a rotating disk of dense gas and dust surrounding a young star, from which planets may form.

原げん始し惑わく星せい系けい円えん盤ばんの

中なか

で

、

微び

惑わく

星せい

が

衝しょう

突とつ

を

繰く

り

返かえ

し

て

惑わく

星せい

が

成せい

長ちょう

する

。

Within a protoplanetary disk, planetesimals repeatedly collide and planets grow.

アルマ望ぼう遠えん鏡きょうは、若わかい星ほしの周まわりの原げん始し惑わく星せい系けい円えん盤ばんを詳しょう細さいに観かん測そくした。

The ALMA telescope observed the protoplanetary disk around a young star in detail.

Kanji

原meadow, original, primitive
始commence, begin
惑beguile, delusion, perplexity
星star, spot, dot
系lineage, system
円circle, yen, round
盤tray, shallow bowl, platter

Related words

原げん始し惑わく星せい
原始惑星 (protoplanet) is a body in the process of becoming a planet, while 原始惑星系円盤 is the disk of material from which such bodies form.
降こう着ちゃく円えん盤ばん
降着円盤 (accretion disk) is a more general term for a disk of material accreting onto a central object; 原始惑星系円盤 specifically refers to the disk around a young star where planet formation occurs.

Built from

原げん始し+

Etymology

Compound of 原始 (primitive, original), 惑星系 (planetary system), and 円盤 (disk). A direct translation of the English term 'protoplanetary disk'.

惑わく星せい系けい

+円えん盤ばん