Copyright:Christian Bertincourt;
Text:
Keighley Rockcliffe
(NASA
GSFC,
UMBC
CSST,
CRESST II)
中文翻譯:
在我們的銀河系裡，有一片神秘的黑暗區域，叫做Barnard 93（簡稱B93）。這幅來自天文攝影師Christian Bertincourt的美麗圖片展示了B93，它位於小人馬星雲（Messier 24）中，和天上的明亮星星形成了鮮明的對比。B93就像一個幽靈，因為它裡面有許多氣體和塵埃，這些都是因為星星的死亡，比如超新星爆炸後留下的。它看起來像是一個黑洞，但其實裡面並不空，塵埃阻擋了更遠星星的光。就像其他的黑暗星雲一樣，如果B93裡的氣體密度夠高，這些氣體將會在重力的作用下凝聚，最終形成新的星星。一旦這些新星點燃，B93會從一個神秘的黑暗幽靈變成一個充滿生命的新星誕生的搖籃。
原文:
“A ghost in the Milky Way…” says Christian Bertincourt, the astrophotographer behind this striking image of Barnard 93 (B93). The 93rd entry in Barnard’s Catalogue of Dark Nebulae, B93 lies within the Small Sagittarius Star Cloud (Messier 24), where its darkness stands in stark contrast to bright stars and gas in the background. In some ways, B93 is really like a ghost, because it contains gas and dust that was dispersed by the deaths of stars, like supernovas. B93 appears as a dark void not because it is empty, but because its dust blocks the light emitted by more distant stars and glowing gas. Like other dark nebulas, some gas from B93, if dense and massive enough, will eventually gravitationally condense to form new stars. If so, then once these stars ignite, B93 will transform from a dark ghost into a brilliant cradle of newborn stars.
來源:NASA每日圖片
