- 1類星體
A quasar is an object far out in space that looks a bit like a star — a sharp point of light — but is not a star. It shines with huge brightness, far brighter than an ordinary galaxy, even though it is so distant that the light has travelled for billions of years. Scientists first found them as strong radio sources that looked almost like stars, and the name comes from that: quasi-stellar, “as if they were stars.” Though actually, we now take a quasar to be the very bright centre of a young galaxy, where a huge black hole is pulling in gas; the gas heats up and pours out light. You will meet the word in science news and astronomy, not at the dinner table. It is a 1960s science word, and it is still the normal term.
組成A blend of quasi- (“almost, as if”) and stellar (“of a star”), from quasi-stellar radio source. Coined by the American astrophysicist Hong-Yee Chiu in 1964. On the surface it looks like quasi- + -ar.
同家族的字
- quasi-the first half of the blend: “almost” or “as if”
- stellarthe second half of the blend: “of a star”
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
quasarnoun/ˈkweɪ.zɑː/
- 1
astronomynatural-sciencesAn extragalactic object, starlike in appearance, that is among the most luminous and (putatively) the most distant objects in the universe.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。