baishuxu

天文版主

最新动态 20分钟前

  1. 9小时前
    2019-01-15 23:29:45
    baishuxu 更新于 NASA每日天文一图

    @日始之音 支持一下楼主……本来我也打算搬一下顺便翻译的,然后忙起来就忘了_(:з」∠)_

    我也想翻译_(:з」∠)_但是可能也是有生之年了

    P.S. 卧槽突然发现是元老……Orz

  2. 2019-01-15 22:56:18
    baishuxu 更新于 NASA每日天文一图

    2019 January 15

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    心灵与灵魂星云 The Heart and Soul Nebulas

    Image Credit & Copyright: [email protected]' rel='external nofollow noopener noreferrer' target='_blank' class='link-external'>Mario Zauner

    Explanation: Is the heart and soul of our Galaxy located in Cassiopeia ? Possibly not, but that is where two bright emission nebulas nicknamed Heart and Soul can be found. The Heart Nebula , officially dubbed IC 1805 and visible in the featured image on the bottom right, has a shape reminiscent of a classical heart symbol . The Soul Nebula is officially designated IC 1871 and is visible on the upper left. Both nebulas shine brightly in the red light of energized hydrogen . Also shown in this three-color montage is light emitted from sulfur , shown in yellow, and oxygen , shown in blue. Several young open clusters of stars are visible near the nebula centers. Light takes about 6,000 years to reach us from these nebulas , which together span roughly 300 light years . Studies of stars and clusters like those found in the Heart and Soul Nebulas have focused on how massive stars form and how they affect their environment .

    Tomorrow's picture: open space

  3. 15小时前
    2019-01-15 17:27:18

    那个,论坛支持TEX代码的……用两个「$\$$」括起来就好……
    例如:$\mathrm{e}^{\mathrm{i}\pi}+1=0$
    P.S. 你引号错了一个
    P.P.S. 你终于有头像了
    P.P.P.S 论坛支持文字超链接

  4. 21小时前
    2019-01-15 11:39:56
    baishuxu 更新于 日本2018年年度流行语

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  5. 1天前
    2019-01-14 22:20:35

    @Phantom_Ghost 我认为只要是没有逾越理性讨论这点原则都不可以实施封禁处罚

    悄悄说一句,版主都有解封和封禁的权限……

  6. 2019-01-14 15:07:56
    baishuxu 更新于 NASA每日天文一图

    2019 January 14

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    在阿尔卑斯山上看流星与银河 Meteor and Milky Way over the Alps

    Image Credit & Copyright: Nicholas Roemmelt (Venture Photography )

    Explanation: Now this was a view with a thrill. From Mount Tschirgant in the Alps , you can see not only nearby towns and distant Tyrol ean peaks, but also, weather permitting, stars, nebulas, and the band of the Milky Way Galaxy . What made the arduous climb worthwhile this night, though, was another peak -- the peak of the 2018 Perseids Meteor Shower . As hoped, dispersing clouds allowed a picturesque sky-gazing session that included many faint meteors, all while a carefully positioned camera took a series of exposures. Suddenly, a thrilling meteor -- bright and colorful -- slashed down right next the nearly vertical band of the Milky Way . As luck would have it, the camera caught it too. Therefore, a new image in the series was quickly taken with one of the sky-gazers posing on the nearby peak. Later, all of the images were digitally combined .

    Tomorrow's picture: heart & soul

  7. 2天前
    2019-01-13 13:33:49
    baishuxu 更新于 NASA每日天文一图

    2019 January 13

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    X射线波段下看到的第谷超新星遗迹 Tycho's Supernova Remnant in X-ray

    Image Credit: NASA / CXC / F.J. Lu (Chinese Academy of Sciences) et al.

    Explanation: What star created this huge puffball? What's pictured is the hot expanding nebula of Tycho's supernova remnant , the result of a stellar explosion first recorded over 400 years ago by the famous astronomer Tycho Brahe . The featured image is a composite of three X-ray colors taken by the orbiting Chandra X-ray Observatory . The expanding gas cloud is extremely hot, while slightly different expansion speeds have given the cloud a puffy appearance. Although the star that created SN 1572 , is likely completely gone, a star dubbed Tycho G , too dim to be discerned here , is thought to be a companion. Finding progenitor remnants of Tycho's supernova is particularly important because the supernova is of Type Ia, an important rung in the distance ladder that calibrates the scale of the visible universe. The peak brightness of Type Ia supernovas is thought to be well understood, making them quite valuable in exploring the relationship between faintness and farness in the distant universe.

    Tomorrow's picture: meteor mountain

  8. 2019-01-13 11:34:55
    baishuxu 更新于 NASA每日天文一图

    2019 January 12

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    疑是银河落九天 Milky Way Falls

    Image Credit & Copyright : Yuri Beletsky (Carnegie Las Campanas Observatory , TWAN )

    Explanation: It can be the driest place on planet Earth, but water still flows in Chile's Atacama desert, high in the mountains. After discovering this small creek with running water, the photographer returned to the site to watch the Milky Way rise in the dark southern skies, calculating the moment when Milky Way and precious flowing water would meet. In the panoramic night skyscape, stars and nebulae immersed in the glow along the Milky Way itself also shared that moment with the Milky Way's satellite galaxies the Large and Small Magellanic clouds above the horizon at the right. Bright star Beta Centauri is poised at the very top of the waterfall. Above it lies the dark expanse of the Coalsack nebula and the stars of the Southern Cross.

    Tomorrow's picture: when stars explode

  9. 2019-01-13 11:27:58
    baishuxu 发表了帖子 NASA每日天文一图

    NASA的APOD (NASA's Astronomy Picture of the Day)每天都会更新一张好看的天文图片,这个帖子就用来放APOD图片吧~

    一楼将存档2019年1月1日至今天的APOD。

    每日天文一图

    Astronomy Picture of the Day



    2019 January 1

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    红外波段看到的草帽星系
    The Sombrero Galaxy in Infrared

    2019 January 2

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    WISE卫星拍摄到的红外波段的猎户座星云
    The Orion Nebula in Infrared from WISE

    2019 January 3

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    天涯和海角
    Ultima and Thule

    2019 January 4

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    旋转的『天涯海角』的动图
    Ultima Thule Rotation Gif

    2019 January 5

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    月球背面的『玉兔2号』
    Yutu 2 on the Farside

    2019 January 6

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    射向银河中心的激光
    A Laser Strike at the Galactic Center

    2019 January 7

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    金牛座方向的恒星、流星和彗星
    Stars, Meteors, and a Comet in Taurus

    2019 January 8

    HESS Telescopes Explore the High Energy Sky


    2019 January 9

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    象限仪座流星雨
    Quadrantids

    2019 January 10

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    船帆座超新星遗迹
    Vela Supernova Remnant Mosaic

    2019 January 11

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    北京看到的日偏食
    Partial Eclipse over Beijing

  10. 2019-01-13 11:26:21

    @Phantom_Ghost 我想看看天文专业的人是怎么理解卡西尼裂缝之类的东西

    你说的是土星环的卡西尼缝咩

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