2025 年 4 月

NASA·每日一图

太空中的萨克斯风

In this photo taken on Feb. 8, 1984, NASA astronaut Ronald E. McNair plays his saxophone while off-duty during the STS-41B mission.
这张照片拍摄于1984年2月8日,画面中,NASA宇航员罗纳德·E·麦克奈尔在STS-41B任务期间执行完任务后,利用闲暇时间吹奏萨克斯风。

天文·每日一图

墨西哥布法山的微笑天空

The featured image shows a night sky over a distant hill. The night sky has three bright objects: a crescent moon, the planet Venus (highest), and the planet Saturn. Taken together, the moon and planets make a happy face icon. Please see the explanation for more detailed information.
特色图片显示的是远处山丘上的夜空。夜空中有三个明亮的天体:新月、金星(最高)和土星。月亮和行星共同组成了一个快乐的表情图标。有关更多详细信息,请参阅说明。

天文·每日一图

土星环消失之谜

The planet Saturn is shown many times down the composite image. The top image was taken in 2020 and shows Saturn’s rings very clearly, whereas the bottom image was taken in 2025 and the rings are only visible as a dark line across the planet. The six images show the progression year by year. Please see the explanation for more detailed information.
土星在合成图像中多次出现。上方图像拍摄于2020年,清晰地展现了土星环;下方图像拍摄于2025年,土星环仅以一条暗线的形式横跨整个土星。这六幅图像展现了土星环逐年变化的轨迹。有关更多详细信息,请参阅说明。

NASA·每日一图

哈勃在鲸鱼体内发现鱿鱼

Today’s rather aquatic-themed NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy, which sits 45 million light-years away in the constellation Cetus (The Whale).
这是一张具有浓厚海洋风格的图像,由欧洲航天局/哈勃太空望远镜和美国国家航空航天局拍摄,展示的是螺旋星系梅西耶77(Messier 77),也被称为鱿鱼星系。该星系距离地球约4500万光年,位于鲸鱼座。

NASA·每日一图

以崭新视角再探天鹅座环之美

The Cygnus Loop, also known as the Veil Nebula, is a supernova remnant – the remains of the explosive death of a massive star.
天鹅座环(Cygnus Loop),又被称为面纱星云(Veil Nebula),是一颗大质量恒星剧烈爆炸后留下的超新星遗迹。

天文·每日一图

Gum 37与南天的蝌蚪云

A starfield is shown dominated by a purple and red nebula. Several dark dust pillars are visible that appear not unlike tadpoles. Please see the explanation for more detailed information.
星空被紫色和红色的星云所笼罩。几根暗色尘埃柱清晰可见,形状类似蝌蚪。有关更多详细信息,请参阅说明。

天文·每日一图

IC 418: 万花尺星云

A complex orange and purple nebula with a complex texture is shown in front of a dark starfield. Please see the explanation for more detailed information.
一片黑暗的星场前方,呈现出一片纹理复杂的橙色和紫色星云。有关更多详细信息,请参阅说明。

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