A spiral galaxy with blue spiral arms and a bright center is shown. The galaxy is surrounded by foreground stars and two smaller galaxies. In the galaxy’s center are dark brown dust and red emission filaments. Please see the explanation for more detailed information.
图中显示的是一个螺旋星系，具有蓝色旋臂和明亮的中心。星系周围环绕着前景恒星和两个较小的星系。星系中心有深棕色尘埃和红色发射条纹。有关更多详细信息，请参阅说明。
请参阅说明。单击图片将下载可用的最高分辨率版本。
2023年10月20日 Galaxies and a Comet Image Credit & Copyright: Dan Bartlett Explanation: Galaxies abound in this sharp telescopic image recorded on October 12 in dark skies over June Lake, California. The celestial scene spans nearly 2 degrees within the boundaries of the well-trained northern constellation Canes Venatici. Prominent at the upper left 23.5 million light-years distant is big, beautiful spiral galaxy NGC 4258, known to some as Messier 106. Eye-catching edge-on spiral NGC 4217 is above and right of center about 60 million light-years away. Just passing through the pretty field of view is comet C/2023 H2 Lemmon, discovered last April in image data from the Mount Lemmon Survey. Here the comet sports more of a lime green coma though, along with a faint, narrow…
2021年04月09日 Messier 106 Image Credit: NASA, Hubble Legacy Archive, Kitt Peak National Observatory; Amateur Data & Processing Copyright: Robert Gendler Explanation: Close to the Great Bear (Ursa Major) and surrounded by the stars of the Hunting Dogs (Canes Venatici), this celestial wonder was discovered in 1781 by the metric French astronomer Pierre Mechain. Later, it was added to the catalog of his friend and colleague Charles Messier as M106. Modern deep telescopic views reveal it to be an island universe – a spiral galaxy around 30 thousand light-years across located only about 21 million light-years beyond the stars of the Milky Way. Along with a bright central core, this stunning galaxy portrait, a composite of image data from amateur and professional telescopes, highlights youthful blue…
