Copyright:Monica Mesa
Text:
Cecilia Chirenti
(NASA
GSFC,
UMCP,
CRESST II)
中文翻譯:
你有沒有親眼見過其他星系呢？這幅圖片展示的是大麥哲倫星雲（Large Magellanic Cloud），它是我們銀河系（Milky Way）的一個近鄰。如果你在北緯20度以南的地方（越南南越好），在一個黑暗的天空地點，遠離城市和光污染，你可以用肉眼看到它。大麥哲倫星雲是一個矮不規則星系，距離我們約163,000光年，是我們本地星系團（Local Group）的一部分。儘管它很小，質量約是銀河系的10%到20%，但它正在積極產生恆星。這很可能是因為銀河系對大麥哲倫星雲的引力影響，讓它們之間有著潮汐的推拉。一些天文學家預測，在大約20億年後，它將與銀河系相撞。
原文:
Have you ever seen another galaxy with your own eyes? The featured image shows the Large Magellanic Cloud (LMC), one of the closest neighbors of our Milky Way. If you are anywhere south of latitude 20° N (but the further south, the better), you can see it with the unaided eye if you go to a dark sky location, away from big cities and light polution. It is a dwarf irregular galaxy about 163,000 light-years away, and a member of our Local Group of galaxies. Despite being small, with a total mass approximately equivalent to 10% – 20% of the mass of the Milky Way, the LMC is very actively forming stars. This is likely due in part to the gravitational push and pull of tides caused by the Milky Way on the LMC. Some astronomers have predicted that it will collide with the Milky Way in in about 2 billion years.
來源:NASA每日圖片
