NASA2025

NASA2025

准备绕月轨道运行并开展科学研究、探究太阳风如何与火星相互作用,以及展示安静的超音速飞行,这些只是NASA为2025年规划的众多里程碑中的一部分。

新年元旦的极光与稳定极光红弧

新年元旦的极光与稳定极光红弧

A star field appears above a town at night. The left part of the sky shows a pinkish-red glow that is an aurora, while the right part of the sky shows a smoother and darker glow that is a SAR arc. Please see the explanation for more detailed information.
夜晚,城镇上方出现星空。天空左侧出现粉红色辉光,这是极光,而天空右侧出现更平滑、更暗的辉光,这是稳定极光红弧。有关更多详细信息,请参阅说明。

韦伯与哈勃影像: 互撞的螺旋星系

韦伯与哈勃影像: 互撞的螺旋星系

Two spiral galaxies are pictured on the left and right. They galaxy on the left is smaller. Both show red lanes of dust in their spiral arms. Please see the explanation for more detailed information.
左图和右图为两个螺旋星系。左侧星系较小。两个星系的旋臂中都有红色尘埃带。有关更多详细信息,请参阅说明。