馬頭星雲
The Horsehead Nebula

來源:George Chatzifrantzis|發表日期:2025-12-10
在恆星風和輻射的雕琢下,這個塵封的星際分子云偶然形成了一個一眼就能認出的形狀。它被稱為 "馬頭星雲"(The Horsehead Nebula),位於大約 1 , 500 光年遠的地方,嵌在巨大的獵戶座雲團中。這個黑雲大約有五光年 "高",被命名為巴納德 33 ,最早是在 19 世紀末拍攝的一張照片上被發現的。 B 33 之所以可見,主要是因為它的遮蔽塵埃在發射星雲 IC 434 的光輝下形成了剪影。 哈勃太空望遠鏡在 21 世紀初拍攝的影像中發現了正在 B 33 內形成的年輕恆星。當然,在未來的幾百萬年裡,這個壯麗的星際雲團會慢慢改變它的外觀形狀。但是現在,從地球上用小型望遠鏡觀測馬頭星雲雖然困難重重,但還是很有意義的。
原文:Sculpted by stellar winds and radiation, this dusty interstellar molecular cloud has by chance has assumed an immediately recognizable shape. Fittingly known as The Horsehead Nebula, it lies some 1,500 light-years distant, embedded in the vast Orion cloud complex. About five light-years "tall," the dark cloud is cataloged as Barnard 33, first identified on a photographic plate taken in the late 19th century. B33 is visible primarily because its obscuring dust is silhouetted against the glow of emission nebula IC 434. Hubble space telescope images from the early 21st century find young stars forming within B33. Of course, the magnificent interstellar cloud will slowly shift its apparent shape over the next few million years. But for now the Horsehead Nebula is a rewarding though difficult object to view with small telescopes from planet Earth.
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