nebula
Significado: A vast cloud of gas and dust in interstellar space, often serving as a region where new stars are formed or as the remnant of a dying star.
In astronomy, nebulae are classified into several types: emission nebulae glow from ionised gas, reflection nebulae scatter starlight, and planetary nebulae are shells expelled by dying stars. The term frequently appears in popular science writing and is used figuratively to describe anything vague or cloud-like. The plural can be either 'nebulae' (Latin) or 'nebulas' (anglicised).
Ejemplos
- The Hubble Space Telescope captured a stunning image of the Orion Nebula, revealing hundreds of newborn stars. 哈勃太空望远镜拍摄了一张令人惊叹的猎户座星云图像,揭示了数百颗新生恒星。El telescopio espacial Hubble captó una imagen impresionante de la nebulosa de Orión, que revelaba cientos de estrellas recién nacidas.ハッブル宇宙望遠鏡はオリオン星雲の見事な画像を撮影し、数百の新生星を明らかにした。허블 우주 망원경은 오리온 성운의 놀라운 이미지를 촬영하여 수백 개의 신생별을 드러냈다.
- Researchers at the Royal Observatory identified a previously unknown nebula in the constellation Cygnus. 皇家天文台的研究人员在天鹅座中发现了一个此前未知的星云。Investigadores del Real Observatorio identificaron una nebulosa desconocida hasta entonces en la constelación del Cisne.王立天文台の研究者たちは、はくちょう座にこれまで知られていなかった星雲を発見した。왕립 천문대의 연구자들은 백조자리에서 이전에 알려지지 않았던 성운을 발견했다.
- The planetary nebula surrounding the white dwarf was expanding at roughly twenty kilometres per second. 围绕白矮星的行星状星云正在以大约每秒二十公里的速度膨胀。La nebulosa planetaria que rodeaba la enana blanca se expandía a unos veinte kilómetros por segundo.白色矮星を取り囲む惑星状星雲は、およそ秒速20キロメートルで膨張していた。백색왜성을 둘러싼 행성상 성운은 초속 약 20킬로미터의 속도로 팽창하고 있었다.
Pronunciación
Guía de uso
Contexto: academic, scientific
Tono: neutral
Origen e historia
From Latin nebula meaning 'mist' or 'cloud.' Adopted into English astronomical vocabulary in the early 18th century, originally referring to any diffuse celestial object.
Contexto cultural
Era: Modern
Generation: All ages
Social background: Universal
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