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A Pelhamite 貝崙客
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紀錄生活,想法,及其他種種
貝崙位於帝國首都北郊,離中城15哩
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雪茄星系發出的煙

陰森的暗星雲SH2 136

陰森的暗星雲SH2 136 暗星雲SH2-136隨時都在歡度萬聖節。恆星誕生的複雜過程會產生形狀和大小不一的塵埃雲,在人類的認知之中,上面影像可能像是被右方幽魂追趕的一群人。現代所慶祝的萬聖節,保留原先奇裝以嚇跑亡靈的歷史起源。從西元前五世紀起,萬聖節成為越區節 ( cross-quarter day)慶典,誌記北半球的春分/秋分 (日夜等長)與夏至/冬至 (最長晝/最長夜)之間的中途日。在我們現代的曆法中,真正的越區節是在下星期,而其他的越區節為土撥鼠日 (Groundhog Day)和華爾普吉斯之夜 (Walpurgis Night)。

蟹狀星雲的組合影像

蟹狀星雲的組合影像 蟹狀星雲的編錄是M1,也就是梅西葉著名的「非彗星型錄」的第一個天體。現在我們知道蟹狀星雲是一個超新星遺骸--大質量恆星死亡爆炸所產生的擴張碎片雲。這幅有趣的假色影像,組合了來自錢卓拉、哈伯和史匹哲等太空天文望遠鏡的數據,在X射線 (藍-紫)、可見光 (綠)和紅外光 (紅)波段探索這團宇宙碎片雲。星雲中心附近的亮斑是蟹狀星雲波霎,為一顆每轉自轉30次的中子星,是現代天文學家公認最奇特的天體之一。就像一個宇宙級的發電機,這顆恆星核崩塌所產生的遺骸,是蟹狀星雲發出各種電磁波段輻射的能量源。蟹狀星雲位在金牛座內,離我們約有6,500光年遠,大小約有12光年

觸鬚星系與星系碰撞

觸鬚星系與星系碰撞 烏鴉座內的二個星系正在發生碰撞,上面是它們的近況影像。當二個星系互撞時,它們內部的恆星通常並不會撞在一起,因為不管恆星看起來多麼明亮,它們只占據很小的空間,星系內大部份的空間多空無一物。但是在這種歷時數億年的緩慢碰撞中,星系能透過重力作用把對方扯散,星系內無所不在的塵埃和氣體也會相互衝撞。在上面這種龐然巨物的互撞中,由大質量分子雲所聚成的黝黑塵埃柱,因為這種星系近距離接觸而受到壓縮,使得數以百萬計的恆星在短時間內快速誕生,部份恆星會在重力的束縛下形成大質量的星團。 如果你喜歡天文,請到Astronomy Picture of the Day (成大物理分站) ASTRONOMY Clock strikes twelve and moondrops burst Out at you from their hiding place Like acid and oil on a madman's face His reason tends to fly away Like lesser birds on the four winds Like silver scrapes in May And now the sand's become a crust Most of you have gone away Come Susie dear, let's take a walk Just out there upon the beach I know you'll soon be married And you'll want to know where winds come from Well it's never said at all On the map that Carrie reads Behind the clock back there you know At the Four Winds Bar Hey! Hey! Hey! Hey! Four winds at the Four Winds Bar Two doors locked and windows barred One door left to take you in The other one just mirrors it Hey! Hey! Hey! Hey! Hellish glare and inference The other one's a duplicate The Queenly flux, eternal light Or the light that never warms Yes the light that never, never warms Or the light that never Never warms Never warms Never warms The clock strikes twelve and moondrops burst Out at you from their hiding place Miss Carrie nurse and Susie dear Would find themselves at Four Winds Bar It's the nexus of the crisis And the origin of storms Just the place to hopelessly Encounter time and then came me Hey! Hey! Hey! Hey! Call me Desdinova Eternal light These gravely digs of mine Will surely prove a sight And don't forget my dog Fixed and consequent Astronomy...a star
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