star cluster
(historical) A writing system used in pharaonic Egypt that was developed alongside the hieroglyphic system, primarily written in ink with a reed brush on papyrus, allowing scribes to write quickly ...
present participle of buckle down
(slang) excellent, fashionable, stylish
(astronomy) A group of gravitationally bound stars and other material (such as nebulae and planets), conventionally with one generation of similarly aged stars from the same pre-stellar nebula.
天文学者たちは、その同年代の恒星が形成される様子を研究するために、遠方の重力で結びついた恒星や周囲の物質の集まりに望遠鏡を向けた。
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