2025年10月28日
NGC 6995: 蝙蝠星云
影像提供与版权: Francis Bozon
说明: 你能看到蝙蝠吗？它在这张面纱星云东边的宇宙特写中若隐若现。面纱星云本身是一个巨大的超新星残骸，是一颗大质量恒星 死亡爆炸后扩展的碎片云。尽管面纱星云大致呈圆形，覆盖天鹅座（Cygnus）方向近3度的天空，但NGC 6995，俗称蝙蝠星云，跨越仅1/2度，大约相当于月球的视直径。面纱星云距离地球约1,400光年，令人放心，依此距离估计，面纱星云的跨度约12光年。透过几个窄频滤光片记录的影像资料合成中，残骸中氢原子的发射显示为红色，氧原子的强烈发射显示为蓝色调。当然，在面纱星云的西边还有另一个季节性幻影: 女巫的扫帚星云。
明日的图片: open space
Due to the lapse in federal government funding, NASA is not updating APOD website. We sincerely regret this inconvenience.
由于美国联邦政府资金中断，NASA目前暂停更新APOD网站。对此带来的不便，我们深感抱歉。
英文原文:
Explanation: Can you see the bat? It haunts this cosmic close-up of the eastern Veil Nebula . The Veil Nebula itself is a large supernova remnant, the expanding debris cloud from the death explosion of a massive star . While the Veil is roughly circular in shape and covers nearly 3 degrees on the sky toward the constellation of the Swan ( Cygnus ), NGC 6995, known informally as the Bat Nebula, spans only 1/2 degree, about the apparent size of the Moon . That translates to 12 light-years at the Veil’s estimated distance, a reassuring 1,400 light-years from planet Earth . In the composite of image data recorded through several narrow band filters, with emission from hydrogen atoms in the remnant shown in red and with strong emission from oxygen atoms shown in hues of blue. Of course, in the western part of the Veil lies another seasonal apparition: the Witch’s Broom Nebula.
