地球

天文·每日一图

欧罗巴上的所有水

Earth without water is shown on the right, while Jupiter’s moon Europa is shown on the left. Superposed on each object is a blue sphere estimating the amount of water each object contains. The blue spheres are about the same size. Please see the explanation for more detailed information.
右侧显示的是没有水的地球,左侧显示的是木星的卫星木卫二。每个物体上都叠加了一个蓝色球体,用于估算每个物体所含的水量。这些蓝色球体大小大致相同。有关更多详细信息,请参阅说明。

天文·每日一图

人马座中的星云与星团

A starfield surrounds a several large nebulas that appear mostly red but also white and blue. Dark dust and blue filaments also populate the frame. Please see the explanation for more detailed information.
星场环绕着几个大型星云,这些星云主要呈现红色,但也有一些白色和蓝色。画面中还布满了暗色尘埃和蓝色丝状结构。有关更多详细信息,请参阅说明。

天文·每日一图

从地球升起: 巨型喷流闪电

An image of Earth from space shows an unusual multi-colored jet in the middle of the frame. Please see the explanation for more detailed information.
这张从太空拍摄的地球照片显示,画面中央有一股不寻常的彩色喷流。有关更多详细信息,请参阅说明。

天文·每日一图

地球上的所有水资源

An illustration of planet Earth is shown where the Earth is tan and has no water shown on its surface. In the foreground are several small blue spheres showing how much water is known to reside on our planet. Please see the explanation for more detailed information.
这张地球插图呈现的是棕褐色,表面没有水。前景中有几个蓝色小球,显示了地球上已知的水含量。有关更多详细信息,请参阅说明。

资讯

观星指南(2025年9月)

What’s Up for September? Saturn puts on a spectacular show, a sunrise conjunction shines bright, and we ring in the autumnal equinox.
九月的天空会发生什么?土星上演壮观天象,日出近合璀璨夺目,而秋分也随之到来。

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