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。
亮、暗与尘埃飞扬的三叶星云
See Explanation. Clicking on the picture will download the highest resolution version available.
请参阅说明。单击图片将下载可用的最高分辨率版本。
Sh2-132: 狮子星云
A starfield is shown with a large colorful emission nebula in the center. The outline of this emission nebula has a resemblance to a lion. Please see the explanation for more detailed information.
图中显示的是一片星空，中央是一个巨大的彩色发射星云。该发射星云的轮廓类似于狮子。有关更多详细信息，请参阅说明。
尖顶峰上空的海鸥星云
在一座岩石峰上方，可以看到黑暗星空中的红色星云。这个星云看起来像一只飞鸟。有关更多详细信息，请参阅说明。
玫瑰不必是红色的
2024年2月9日 When Roses Aren’t Red Image Credit & Copyright: Tommy Lease (Denver Astronomical Society) Explanation: Not all roses are red of course, but they can still be very pretty. Likewise, the beautiful Rosette Nebula and other star forming regions are often shown in astronomical images with a predominately red hue, in part because the dominant emission in the nebula is from hydrogen atoms. Hydrogen’s strongest optical emission line, known as H-alpha, is in the red region of the spectrum. But the beauty of an emission nebula need not be appreciated in red light alone. Other atoms in the nebula are also excited by energetic starlight and produce narrow emission lines as well. In this close-up view of the Rosette Nebula, narrowband images are mapped into…