Copyright:
George Chatzifrantzis
中文翻譯:
在遙遠的宇宙中，有一個叫做Helix Nebula的地方，看起來就像一隻眼睛。這片美麗的氣體雲是由在一顆像太陽的星星生命結束時所形成的，並且它也是一個叫做行星星雲的例子。Helix Nebula的中心是一顆將變成白矮星的星星，發出的光非常明亮，讓周圍的氣體變得五顏六色，就像在發光一樣。這幅圖畫是用一架在希臘的個人望遠鏡拍攝的，耗時12小時，拍出了紅、綠和藍色的光，其中主要是氫氣發出的光。當我們看到Helix Nebula的內部時，可以看到一些複雜的氣體塊，它們的來源還在研究當中。
原文:
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
來源:NASA每日圖片
