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#apod

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小太阳君<p><a href="https://b612.me/tags/APoD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APoD</span></a> <a href="https://b612.me/tags/%E6%AF%8F%E6%97%A5%E4%B8%80%E5%9B%BE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>每日一图</span></a><br><a href="https://b612.me/tags/2025%E5%B9%B403%E6%9C%8815%E6%97%A5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2025年03月15日</span></a></p><p>托洛洛山上空的全食月<br> <br>在今年3月14日这天,月亮恰逢满相。<br>而这也正是庆祝圆周率日(Pi Day)的大好时日,因为在这天晚上的天空中,月球的黄道经度与太阳相距3.14弧度(180度)。<br>对圆周率和夜空的爱好者来说,这天的额外惊喜为:月亮恰好也穿过地球的本影,带来月全食的景观。<br>在清朗的夜空中,食月的色泽有时可以很鲜艳。<br>以这幅摄于智利托洛洛山的时序影像为例,受到散射到地球影子里的红化阳光之渲染,月盘带著古铜的色泽。<br>这幅月食三联影像,记录了此例全长约1小时的月全食之食既、食甚及生光等阶段。<br>这轮全食月较亮临边的淡淡泛蓝色泽,则来自受到地球平流层之臭氧层过滤的阳光。</p>
Khurram Wadee ✅<p><a href="https://mastodon.org.uk/tags/Tololo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Tololo</span></a> <a href="https://mastodon.org.uk/tags/Totality" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Totality</span></a><br><a href="https://mastodon.org.uk/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.org.uk/tags/Picture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Picture</span></a> of the Day</p><p><a href="https://apod.nasa.gov/apod/ap250315.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250315.ht</span><span class="invisible">ml</span></a></p><p><a href="https://mastodon.org.uk/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a> <a href="https://mastodon.org.uk/tags/Chile" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Chile</span></a></p>
Astronomy Picture of the Day<p>Tololo Totality<br><br>Image Credit &amp; Copyright: Petr Horálek/CTIO (Cerro Tololo Observatory) /AURA/NSF/ NOIRLab<br><br><a href="https://apod.nasa.gov/apod/ap250315.html" rel="nofollow noopener noreferrer" target="_blank">https://apod.nasa.gov/apod/ap250315.html</a> <a href="https://reentry.codl.fr/tags/apod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
小太阳君<p><a href="https://b612.me/tags/APoD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APoD</span></a> <a href="https://b612.me/tags/%E6%AF%8F%E6%97%A5%E4%B8%80%E5%9B%BE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>每日一图</span></a><br><a href="https://b612.me/tags/2025%E5%B9%B403%E6%9C%8814%E6%97%A5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2025年03月14日</span></a></p><p>满月与山影<br> <br>离太阳3.14弧度的月相会是什么? 当然是满月啰。<br>即使月亮可能连续数天都看似满相,但真正的满月,只出现在月亮于黄道经度上与太阳相距π弧度(亦即180度)的时候。<br>也就是说,在地球的天空中,月亮与太阳反向。<br>在2020年3月9日那天,月亮于太阳西落时东升,离满相的瞬间仅过了一个小时左右,因此影像中这轮略扁的橙色月亮看起来仍是满相。<br>在特内里费岛 泰德国家公园内拍摄这张照片时,摄影者背对落日。<br>而从约3,500米高的泰德火山顶附近看出去,与落日反向的,还有这座山峰升起并伸入地球浓密大气里的三角形影子。<br>在左侧远方的棱线下方,可见到泰德天文台的白色圆顶。<br>2025年3月25日世界时06:55 UTC之时,月亮会再次与太阳相距π弧度,时间点约在今年三月的月全食之食甚前3分钟。</p>
Khurram Wadee ✅<p><a href="https://mastodon.org.uk/tags/Moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moon</span></a> <a href="https://mastodon.org.uk/tags/Pi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Pi</span></a> and <a href="https://mastodon.org.uk/tags/MountainShadow" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MountainShadow</span></a><br><a href="https://mastodon.org.uk/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.org.uk/tags/Picture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Picture</span></a> of the Day</p><p><a href="https://apod.nasa.gov/apod/ap250314.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250314.ht</span><span class="invisible">ml</span></a></p><p><a href="https://mastodon.org.uk/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
Astronomy Picture of the Day<p>Moon Pi and Mountain Shadow<br><br>Image Credit &amp; Copyright: Daniel Lopez (El Cielo de Canarias)<br><br><a href="https://apod.nasa.gov/apod/ap250314.html" rel="nofollow noopener noreferrer" target="_blank">https://apod.nasa.gov/apod/ap250314.html</a> <a href="https://reentry.codl.fr/tags/apod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
Miro Collas<p>APOD: 2025 March 13 - The Protostars within Lynds 483 <br><a href="https://apod.nasa.gov/apod/ap250313.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250313.ht</span><span class="invisible">ml</span></a></p><p><a href="https://masto.ai/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://masto.ai/tags/Cosmology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cosmology</span></a> <a href="https://masto.ai/tags/Astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophotography</span></a> <a href="https://masto.ai/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
小太阳君<p><a href="https://b612.me/tags/APoD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APoD</span></a> <a href="https://b612.me/tags/%E6%AF%8F%E6%97%A5%E4%B8%80%E5%9B%BE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>每日一图</span></a><br><a href="https://b612.me/tags/2025%E5%B9%B403%E6%9C%8813%E6%97%A5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2025年03月13日</span></a></p><p>分子云Lynds 483内的原恒星<br> <br>在这幅由韦伯太空望远镜所拍摄的近红外光影像里,吸睛的沙漏状星云中心附近,有2颗原恒星藏在同一个像素内。<br>这个位于巨蛇座尾部方向的活跃恒星形成系统,座落在编录号为Lynds 483(林兹483)的 尘埃分子云之内,与我们相距约65光年。 <br>这对塌缩中的原恒星产生了影像中的双瓣状外泛流,而这种高能物质喷流业已持续了数万年。<br>韦伯望远镜的高解析度影像证实,恒星诞生过程可以相当剧烈,在此范例里,可清楚解析出扭曲的震波前沿,如何扩张及冲撞较致密的慢速移动物质。<br>这幅恒星诞生区的特写影像,呈现了暗星云Lynds 483内宽不到半光年的区域。</p>
Khurram Wadee ✅<p>The <a href="https://mastodon.org.uk/tags/Protostars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Protostars</span></a> within <a href="https://mastodon.org.uk/tags/Lynds483" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Lynds483</span></a><br><a href="https://mastodon.org.uk/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.org.uk/tags/Picture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Picture</span></a> of the Day</p><p><a href="https://apod.nasa.gov/apod/ap250313.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250313.ht</span><span class="invisible">ml</span></a></p><p><a href="https://mastodon.org.uk/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
Astronomy Picture of the Day<p>The Protostars within Lynds 483<br><br>Image Credit: NASA, ESA, CSA,<br><br><a href="https://apod.nasa.gov/apod/ap250313.html" rel="nofollow noopener noreferrer" target="_blank">https://apod.nasa.gov/apod/ap250313.html</a> <a href="https://reentry.codl.fr/tags/apod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
小太阳君<p><a href="https://b612.me/tags/APoD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APoD</span></a> <a href="https://b612.me/tags/%E6%AF%8F%E6%97%A5%E4%B8%80%E5%9B%BE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>每日一图</span></a><br><a href="https://b612.me/tags/2025%E5%B9%B403%E6%9C%8812%E6%97%A5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2025年03月12日</span></a></p><p>NGC 772:蕨菜星系<br> <br>为何这个星系看起来像卷曲的蔬菜? <br>螺旋状蕨菜星系的扭曲外观,可能源自它与下方的邻近椭圆星系NGC 770之间的重力互扰。<br>位于白羊座方向、编录号为NGC 772和Arp 78的蕨菜星系,直径超过20万光年,座落在银河繁星的后方约1亿光年远之处。 <br>不过,在这幅主题影像里,蕨菜星系看似还有另一个曳著弥漫长尾的伴侣--沃尔夫-哈林顿彗星。<br>虽然于视觉上,这颗彗星似乎直冲著这个庞大的螺旋星系而去,但其实它距离我们只有数光分,近在太阳系之内。<br>因此,沃尔夫-哈林顿彗星永远撞不到这个遥远的螺旋星系,而二者也毫无物理连结。 <br>在这幅去年(2024年)底摄于法国卡勒恩山区的影像,这二个天体只是凑巧出现在同一片视野里。(fiddleheads, fiddlehead greens 蕨菜; Comet 43P/Wolf-Harrington 沃尔夫-哈林顿彗星)</p>
Khurram Wadee ✅<p><a href="https://mastodon.org.uk/tags/NGC772" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NGC772</span></a>: The <a href="https://mastodon.org.uk/tags/Fiddlehead" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Fiddlehead</span></a> <a href="https://mastodon.org.uk/tags/Galaxy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Galaxy</span></a><br><a href="https://mastodon.org.uk/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.org.uk/tags/Picture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Picture</span></a> of the Day</p><p><a href="https://apod.nasa.gov/apod/ap250312.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250312.ht</span><span class="invisible">ml</span></a></p><p><a href="https://mastodon.org.uk/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
Astronomy Picture of the Day<p>NGC 772: The Fiddlehead Galaxy<br><br>Image Credit &amp; Copyright: Jean-François Bax &amp; Serge Brunier, OCA/C2PU; Text: Ogetay Kayali (Michigan Tech U.)<br><br><a href="https://apod.nasa.gov/apod/ap250312.html" rel="nofollow noopener noreferrer" target="_blank">https://apod.nasa.gov/apod/ap250312.html</a> <a href="https://reentry.codl.fr/tags/apod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
Miro Collas<p>APOD: 2025 March 11 – NGC 1672: Barred Spiral Galaxy from Hubble <br><a href="https://apod.nasa.gov/apod/ap250311.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250311.ht</span><span class="invisible">ml</span></a></p><p><a href="https://masto.ai/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://masto.ai/tags/Cosmology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cosmology</span></a> <a href="https://masto.ai/tags/Astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophotography</span></a> <a href="https://masto.ai/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
小太阳君<p><a href="https://b612.me/tags/APoD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APoD</span></a> <a href="https://b612.me/tags/%E6%AF%8F%E6%97%A5%E4%B8%80%E5%9B%BE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>每日一图</span></a><br><a href="https://b612.me/tags/2025%E5%B9%B403%E6%9C%8811%E6%97%A5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2025年03月11日</span></a></p><p>哈勃影像:棒旋星系NGC 1672<br> <br>许多螺旋星系有棒状的核心,就连我们的银河系,咸认也有一个中等规模的核心棒。<br>上面这幅明亮棒旋星系NGC 1672的超高解析主题影像,是由轨道上的哈勃太空望远镜所拍摄。<br>在这幅影像中,可见到丝缕状的黝黑尘埃带、泛蓝亮星聚成的年轻星团、辉光氢气所组成的泛红发射星云、一道横过星系核心由明亮恒星所构成的长棒结构、以及一个可能藏有超大质量黑洞的明亮活跃星系核。<br>位于剑鱼座方向的NGC 1672,离地球约6千万光年远,大小则约为75,000光年。<br>对NGC 1672所进行的研究,主旨是要厘清核心棒对星系核心区的恒星诞生有何贡献。</p>
Khurram Wadee ✅<p><a href="https://mastodon.org.uk/tags/NGC1672" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NGC1672</span></a>: <a href="https://mastodon.org.uk/tags/BarredSpiral" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BarredSpiral</span></a> <a href="https://mastodon.org.uk/tags/Galaxy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Galaxy</span></a> from <a href="https://mastodon.org.uk/tags/Hubble" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Hubble</span></a><br><a href="https://mastodon.org.uk/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.org.uk/tags/Picture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Picture</span></a> of the Day</p><p><a href="https://apod.nasa.gov/apod/ap250311.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250311.ht</span><span class="invisible">ml</span></a></p><p><a href="https://mastodon.org.uk/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
Astronomy Picture of the Day<p>NGC 1672: Barred Spiral Galaxy from Hubble<br><br>Image Credit: ESA/Hubble &amp; NASA, O. Fox, L. Jenkins, S. Van Dyk, A. Filippenko, J. Lee and the PHANGS-HST Team, D. de Martin (ESA/Hubble), M. Zamani (ESA/Hubble)<br><br><a href="https://apod.nasa.gov/apod/ap250311.html" rel="nofollow noopener noreferrer" target="_blank">https://apod.nasa.gov/apod/ap250311.html</a> <a href="https://reentry.codl.fr/tags/apod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
小太阳君<p><a href="https://b612.me/tags/APoD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APoD</span></a> <a href="https://b612.me/tags/%E6%AF%8F%E6%97%A5%E4%B8%80%E5%9B%BE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>每日一图</span></a><br><a href="https://b612.me/tags/2025%E5%B9%B403%E6%9C%8810%E6%97%A5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>2025年03月10日</span></a></p><p>NGC 1499:加州星云<br> <br>太空中难道真的有卡拉菲亚女王的神话岛屿吗?<br>或许没有,不过这团分子云的轮廓,倒真的形似美国的加州。<br>而我们位于银河猎户臂里的太阳,离加州星云大约只有1,000光年远。<br>亦名为NGC 1499的这团经典发射星云,长度约有100光年。<br>在这幅主题影像里,加州星云最醒目的泛红色泽,来自氢原子被高能星光电离后后,氢离子和失去的电子复合时所发出的特征红光。<br>而发出高能星光电离大部分云气的恒星,极可能是位于星云右侧的明亮炽热、色泽泛蓝的卷舌三(英仙座Xi星)。<br>经常是天文摄影者拍照目标的加州星云,在幽暗的天空下,用大视野望远镜即可在英仙座方向,离昴宿星团昴宿星团不远之处找到它。</p>
Khurram Wadee ✅<p><a href="https://mastodon.org.uk/tags/NGC1499" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NGC1499</span></a>: The <a href="https://mastodon.org.uk/tags/CaliforniaNebula" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CaliforniaNebula</span></a><br><a href="https://mastodon.org.uk/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.org.uk/tags/Picture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Picture</span></a> of the Day</p><p><a href="https://apod.nasa.gov/apod/ap250310.htm" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250310.ht</span><span class="invisible">m</span></a></p><p><a href="https://mastodon.org.uk/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a> <a href="https://mastodon.org.uk/tags/Nebula" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Nebula</span></a></p>
Astronomy Picture of the Day<p>NGC 1499: The California Nebula<br><br>Image Credit &amp; Copyright: Toni Fabiani Mendez<br><br><a href="https://apod.nasa.gov/apod/ap250310.html" rel="nofollow noopener noreferrer" target="_blank">https://apod.nasa.gov/apod/ap250310.html</a> <a href="https://reentry.codl.fr/tags/apod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>