interstellar comet
(astronomy, planetology) A comet (or exocomet) located in interstellar space, and not gravitationally bound to a star.
plural of collapsar
aluminium borotartrate, an astringent and antiseptic.
(idiomatic) To reach an unexpected extent in doing something.
天文学者たちは、その星間彗星の軌道を分析して、別の恒星系から来たものかどうかを調べた。
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