Cassiopeia A

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Definition:
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Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
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1.
This is a photograph of Cassiopeia A, the gaseous remains of a supernova that would have been visible from Earth in about 1667.
这幅图片拍摄的是仙后座A——一个超新星的气态“残骸”，本来在大约1667年时就可以从地球上观察到。
zhè fú tú piàn pāi shè de shì xiān hòu zuò A—— yī gè chāo xīn xīng de qì tài " cán hái " , běn lái zài dà yuē yì qiān liù bǎi liù shí qī nián shí jiù kě yǐ cóng dì qiú shàng guān chá dào 。
www.ecocn.org
2.
These filaments are seen in other supernova remnants such as Cassiopeia A, Tycho and Kepler.
纤维结构见于仙后座A、第谷、开普勒等超新星遗迹中。
xiān wéi jié gòu jiàn yú xiān hòu zuò A 、 dì gǔ 、 kāi pǔ lè děng chāo xīn xīng yí jì zhōng 。
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3.
Astronomers now know the source is a neutron star 11, 000 light years from Earth at the centre of the supernova Cassiopeia A.
天文学家现在意识到这是一颗距离地球11000光年的中子星，位于超新星仙后座A的中心位置。
tiān wén xué jiā xiàn zài yì shí dào zhè shì yī kē jù lí dì qiú yí wàn yī qiān guāng nián de zhōng zǐ xīng , wèi yú chāo xīn xīng xiān hòu zuò A de zhōng xīn wèi zhì 。
article.yeeyan.org
4.
Cassiopeia A, despite having been missed by 17th-century astronomers, is a mere 10, 000 light years away.
尽管在17世纪天文学家没有发现仙后座A，但它却距离地球仅仅只有1万光年远。
jǐn guǎn zài shí qī shì jì tiān wén xué jiā méi yǒu fā xiàn xiān hòu zuò A , dàn tā què jù lí dì qiú jǐn jǐn zhǐ yǒu yī wàn guāng nián yuǎn 。
www.ecocn.org
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