面纱星云：远古超新星的缕缕
(原标题: Veil Nebula: Wisps of an Ancient Supernova)
2025-06-02
浏览次数: 43
像这样的缕缕是银河系中唯一可见的恒星。大约7000年前，这颗恒星在一颗超新星中爆炸，留下了面纱星云。当时，不断膨胀的云可能像新月一样明亮，对于生活在有记载的历史之初的人们来说，可以看到数周。今天，由此产生的超新星遗迹，也被称为天鹅座环，已经褪色，现在只能通过指向天鹅星座的小型望远镜才能看到。然而，剩下的面纱星云在物理上是巨大的，尽管它距离我们大约1400光年，但它的覆盖面积是满月的五倍多。这张特色照片于2024年中期在科威特拍摄，其特征是红色的氢和蓝色的氧发出的光。在像这样完整的面纱星云的深层图像中，即使是勤奋的读者也可能无法识别出标志性的细丝。拼凑起来：当天的天文学难题
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Wisps like this are all that remain visible of a Milky Way star. About 7,000 years ago that star exploded in a supernova, leaving the Veil Nebula. At the time, the expanding cloud was likely as bright as a crescent Moon, remaining visible for weeks to people living at the dawn of recorded history. Today, the resulting supernova remnant, also known as the Cygnus Loop, has faded and is now visible only through a small telescope directed toward the constellation of the Swan (Cygnus). The remaining Veil Nebula is physically huge, however, and even though it lies about 1,400 light-years distant, it covers over five times the size of the full Moon. The featured picture was taken in Kuwait in mid-2024 and features light emitted by hydrogen in red and oxygen in blue. In deep images of the complete Veil Nebula like this, even studious readers might not be able to identify the iconic filaments. Piece it All Together: Astronomy Puzzle of the Day
© Abdullah Alharbi