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. 2023 September 14 [2]See Explanation. Clicking on the picture will download the highest resolution version available. NGC 7331 and Beyond Image Credit & [3]Copyright: [4]Ian Gorenstein Explanation: Big, beautiful spiral galaxy [5]NGC 7331 is often touted as an analog to our own [6]Milky Way. About 50 million light-years distant in the northern constellation [7]Pegasus, NGC 7331 was recognized early on as a spiral nebula and is actually one of the brighter [8]galaxies not included in Charles Messier's [9]famous 18th century catalog. Since the galaxy's disk [10]is inclined to our line-of-sight, long telescopic exposures often result in images that evokes a strong sense of depth. The effect is further enhanced [11]in this sharp image by galaxies that lie beyond the gorgeous [12]island universe. The most prominent background galaxies are about one tenth the [13]apparent size of NGC 7331 and so lie roughly ten times farther away. Their close alignment on the sky with NGC 7331 occurs just by chance. Lingering above the plane of the Milky Way, this striking visual grouping of galaxies is known to some as the [14]Deer Lick Group. Tomorrow's picture: good morning moon __________________________________________________________________ [15]< | [16]Archive | [17]Submissions | [18]Index | [19]Search | [20]Calendar | [21]RSS | [22]Education | [23]About APOD | [24]Discuss | [25]> __________________________________________________________________ Authors & editors: [26]Robert Nemiroff ([27]MTU) & [28]Jerry Bonnell ([29]UMCP) NASA Official: Phillip Newman [30]Specific rights apply. [31]NASA Web Privacy Policy and Important Notices A service of: [32]ASD at [33]NASA / [34]GSFC, [35]NASA Science Activation & [36]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2309/LRGBHa23_n7331r.jpg 3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 4. https://www.astrobin.com/users/laperuz/ 5. http://messier.seds.org/xtra/ngc/n7331.html 6. https://apod.nasa.gov/apod/ap080606.html 7. http://hawastsoc.org/deepsky/peg/index.html 8. http://www.seasky.org/cosmic/sky7a07.html 9. https://www.nasa.gov/content/explore-the-night-sky-hubble-s-messier-catalog-bio 10. https://apod.nasa.gov/apod/ap040701.html 11. https://www.astrobin.com/6xa02f/ 12. http://nedwww.ipac.caltech.edu/level5/March02/Gordon/Gordon2.html 13. http://chandra.harvard.edu/photo/scale.html 14. https://en.wikipedia.org/wiki/NGC_7331_Group 15. https://apod.nasa.gov/apod/ap230913.html 16. https://apod.nasa.gov/apod/archivepix.html 17. https://apod.nasa.gov/apod/lib/apsubmit2015.html 18. https://apod.nasa.gov/apod/lib/aptree.html 19. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 20. https://apod.nasa.gov/apod/calendar/allyears.html 21. https://apod.nasa.gov/apod.rss 22. https://apod.nasa.gov/apod/lib/edlinks.html 23. https://apod.nasa.gov/apod/lib/about_apod.html 24. http://asterisk.apod.com/discuss_apod.php?date=230914 25. https://apod.nasa.gov/apod/ap230915.html 26. http://www.phy.mtu.edu/faculty/Nemiroff.html 27. http://www.phy.mtu.edu/ 28. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 29. http://www.astro.umd.edu/ 30. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 31. https://www.nasa.gov/about/highlights/HP_Privacy.html 32. https://astrophysics.gsfc.nasa.gov/ 33. https://www.nasa.gov/ 34. https://www.nasa.gov/centers/goddard/ 35. https://science.nasa.gov/learners 36. http://www.mtu.edu/