A sprawling spiral galaxy is shown in great detail. This galaxy has blue spiral arms and a bright center that itself seems to look like a spiral galaxy. Please see the explanation for more detailed information.
图中清晰地展示了一个庞大的螺旋星系。该星系拥有蓝色的旋臂和一个明亮的中心，其本身看起来也像一个螺旋星系。有关更多详细信息，请参阅说明。
2019 August 29 M27: Not a Comet Image Credit & Copyright: Bob Franke Explanation: While hunting for comets in the skies above 18th century France, astronomer Charles Messier diligently kept a list of the things he encountered that were definitely not comets. This is number 27 on his now famous n
2019 August 28 Messier 61 Close Up Image Credit: NASA, ESA, Hubble, ESO, Amateur Data; Processing & Copyright: Robert Gendler & Roberto Colombari Explanation: Image data from the Hubble Space Telescope, the European Southern Observatory, and small telescopes on planet Earth are combined in t
