蜘蛛及苍蝇
A star field has a red diffuse glow on the right-hand side. Distinct nebulas appear in the center and on the lower left. Please see the explanation for more detailed information.
星空右侧有红色漫射光。中心和左下方出现明显的星云。有关更多详细信息，请参阅说明。
蜘蛛星云的红外影像
2019 September 4 The Spider Nebula in Infrared Image Credit: NASA, JPL-Caltech, Spitzer Space Telescope, 2MASS Explanation: Will the spider ever catch the fly? Not if both are large emission nebulas toward the constellation of the Charioteer (Auriga). The spider-shaped gas cloud on the left is actually an emission nebula labelled IC 417, while the smaller fly-shaped cloud on the right is dubbed NGC 1931 and is both an emission nebula and a reflection nebula. About 10,000 light-years distant, both nebulas harbor young, open star clusters. For scale, the more compact NGC 1931 (Fly) is about 10 light-years across. The featured picture in scientifically-assigned, infrared colors combines images from the Spitzer Space Telescope and the Two Micron All Sky Survey (2MASS). Spitzer is celebrating its…