Astronomy Picture of the Day [1]Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2022 October 24 [2]The featured image shows the nearby galaxy M31 surrounded by unfamiliar red glowing clouds. Please see the explanation for more detailed information. Clouds Around Galaxy Andromeda Image Credit & Copyright: [3]Andrew Fryhover Explanation: What are those red clouds surrounding the Andromeda galaxy? This galaxy, [4]M31, is often imaged by planet Earth-based astronomers. As the nearest large spiral galaxy, it is a familiar sight with dark dust lanes, bright yellowish core, and [5]spiral arms traced by clouds of bright blue stars. A mosaic of well-exposed broad and narrow-band image data, [6]this deep portrait of our neighboring [7]island universe offers [8]strikingly unfamiliar features though, [9]faint reddish clouds of glowing ionized hydrogen gas in the same wide field of view. Most of the [10]ionized hydrogen clouds surely lie in the foreground of the scene, well within our [11]Milky Way Galaxy. They are likely associated with the pervasive, dusty [12]interstellar cirrus clouds scattered hundreds of [13]light-years above our own [14]galactic plane. Some of the clouds, however, occur right in the [15]Andromeda galaxy itself, and some in [16]M110, the small galaxy just below. Tomorrow's picture: jupiter moves __________________________________________________________________ [17]< | [18]Archive | [19]Submissions | [20]Index | [21]Search | [22]Calendar | [23]RSS | [24]Education | [25]About APOD | [26]Discuss | [27]> __________________________________________________________________ Authors & editors: [28]Robert Nemiroff ([29]MTU) & [30]Jerry Bonnell ([31]UMCP) NASA Official: Phillip Newman [32]Specific rights apply. [33]NASA Web Privacy Policy and Important Notices A service of: [34]ASD at [35]NASA / [36]GSFC, [37]NASA Science Activation & [38]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2210/M31Clouds_Fryhover_3054.jpg 3. https://www.flickr.com/photos/51743649@N07/ 4. https://en.wikipedia.org/wiki/Andromeda_Galaxy 5. https://archive.stsci.edu/prepds/phat/ 6. https://www.flickr.com/photos/51743649@N07/52426245654/in/pool-apods/ 7. https://apod.nasa.gov/apod/ap051222.html 8. https://media.istockphoto.com/photos/funny-british-shorthair-cat-portrait-looking-shocked-or-surprised-picture-id1361394182?k=20&m=1361394182&s=612x612&w=0&h=veRQ9_S8xcC54nBcJ8rNS4BqHVx4oBcfagohNNnF4Sw= 9. https://www.deepskycolors.com/archive/2017/01/01/Clouds-Of-Andromeda.html 10. https://apod.nasa.gov/apod/ap051223.html 11. https://www.nasa.gov/jpl/charting-the-milky-way-from-the-inside-out 12. https://apod.nasa.gov/apod/ap221019.html 13. https://exoplanets.nasa.gov/faq/26/what-is-a-light-year/ 14. https://en.wikipedia.org/wiki/Galactic_plane 15. https://www.nasa.gov/feature/goddard/2017/messier-31-the-andromeda-galaxy 16. https://en.wikipedia.org/wiki/Messier_110 17. https://apod.nasa.gov/apod/ap221023.html 18. https://apod.nasa.gov/apod/archivepix.html 19. https://apod.nasa.gov/apod/lib/apsubmit2015.html 20. https://apod.nasa.gov/apod/lib/aptree.html 21. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 22. https://apod.nasa.gov/apod/calendar/allyears.html 23. https://apod.nasa.gov/apod.rss 24. https://apod.nasa.gov/apod/lib/edlinks.html 25. https://apod.nasa.gov/apod/lib/about_apod.html 26. http://asterisk.apod.com/discuss_apod.php?date=221024 27. https://apod.nasa.gov/apod/ap221025.html 28. http://www.phy.mtu.edu/faculty/Nemiroff.html 29. http://www.phy.mtu.edu/ 30. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 31. http://www.astro.umd.edu/ 32. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 33. https://www.nasa.gov/about/highlights/HP_Privacy.html 34. https://astrophysics.gsfc.nasa.gov/ 35. https://www.nasa.gov/ 36. https://www.nasa.gov/centers/goddard/ 37. https://science.nasa.gov/learners 38. http://www.mtu.edu/