螺旋星云深视场
(原标题: A Helix Nebula Deep Field)
2025-07-29
浏览次数: 1487
螺旋星云在看着你吗？不，从任何生物学意义上来说都不是，但它看起来确实很像一只眼睛。螺旋星云之所以如此命名，是因为你似乎正从螺旋的轴线向下看。实际上，它现在被理解为具有令人惊讶的复杂几何形状，包括径向细丝和延伸的外环。螺旋星云（又名NGC 7293）是行星状星云中最明亮、离我们最近的一个例子，行星状星云是一颗类太阳恒星生命结束时形成的气体云。残余的中央恒星核心，注定要成为一颗白矮星，它发出的光能量如此之大，以至于之前释放的气体发出荧光。这张特色的照片，以红、绿、蓝三色拍摄，但主要由氢气发出的光突出显示，是通过位于希腊的个人望远镜在12小时的曝光下拍摄的。螺旋星云内缘的特写显示了复杂的气体结，其起源仍在研究中。传送门宇宙：随机APOD生成器
查看原文解释
Is the Helix Nebula looking at you? No, not in any biological sense, but it does look quite like an eye. The Helix Nebula is so named because it also appears that you are looking down the axis of a helix. In actuality, it is now understood to have a surprisingly complex geometry, including radial filaments and extended outer loops. The Helix Nebula (aka NGC 7293) is one of brightest and closest examples of a planetary nebula, a gas cloud created at the end of the life of a Sun-like star. The remnant central stellar core, destined to become a white dwarf star, glows in light so energetic it causes the previously expelled gas to fluoresce. The featured picture, taken in red, green, and blue but highlighted by light emitted primarily by hydrogen was created from 12 hours of exposure through a personal telescope located in Greece. A close-up of the inner edge of the Helix Nebula shows complex gas knots the origin of which are still being researched. Portal Universe: Random APOD Generator
© George Chatzifrantzis