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 October 11 [2]A nearby spiral galaxy is shown in great details: NGC 1097. However the galaxy is imaged twice, once with a supernova spot appearing on a lower spiral arm, and once without. The two frames blink back and forth. Please see the explanation for more detailed information. NGC 1097: Spiral Galaxy with Supernova Image Data: Telescope Live ([3]Chile); Image Processing & Copyright: [4]Bernard Miller Explanation: What's happening in the lower arm of this spiral galaxy? A [5]supernova. Last month, supernova [6]SN 2023rve was discovered with [7]UAE's Al-Khatim Observatory and later [8]found to be consistent with the death explosion of a massive star, possibly leaving behind a [9]black hole. Spiral galaxy [10]NGC 1097 is a relatively close 45 million [11]light years away and visible with a small telescope toward the southern constellation of the Furnace ([12]Fornax). The galaxy is notable not only for its [13]picturesque spiral arms, but also for [14]faint jets consistent with ancient [15]star streams left over from a [16]galactic collision -- possibly with the small galaxy seen between its arms on the lower left. The [17]featured image highlights the new supernova by [18]blinking between two exposures taken several months apart. [19]Finding supernovas in nearby galaxies can be important in determining the [20]scale and expansion rate of our [21]entire universe -- a topic currently of [22]unexpected tension and [23]much debate. APOD editor to speak: [24]in Houghton, Michigan on Thursday, October 12 at 6 pm Tomorrow's picture: The Garnet Star __________________________________________________________________ [25]< | [26]Archive | [27]Submissions | [28]Index | [29]Search | [30]Calendar | [31]RSS | [32]Education | [33]About APOD | [34]Discuss | [35]> __________________________________________________________________ Authors & editors: [36]Robert Nemiroff ([37]MTU) & [38]Jerry Bonnell ([39]UMCP) NASA Official: Phillip Newman [40]Specific rights apply. [41]NASA Web Privacy Policy and Important Notices A service of: [42]ASD at [43]NASA / [44]GSFC, [45]NASA Science Activation & [46]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2310/Ngc1097wSn_Miller_1008.gif 3. https://en.wikipedia.org/wiki/Chile 4. https://azstarman.net/About.htm 5. https://imagine.gsfc.nasa.gov/science/objects/supernovae1.html 6. https://en.wikipedia.org/wiki/SN_2023rve 7. https://en.wikipedia.org/wiki/United_Arab_Emirates 8. https://www.astronomycenter.net/articles/2023/09/10/sn2023rve?l=en 9. https://science.nasa.gov/astrophysics/focus-areas/black-holes/ 10. https://en.wikipedia.org/wiki/NGC_1097 11. https://spaceplace.nasa.gov/light-year/en/ 12. https://chandra.harvard.edu/photo/constellations/fornax.html 13. https://apod.nasa.gov/apod/ap230508.html 14. https://apod.nasa.gov/apod/ap221116.html 15. https://apod.nasa.gov/apod/ap191116.html 16. https://youtu.be/lXy3B2K47Qg 17. https://azstarman.net/CDK/NGC1097_TL_SN.htm 18. https://www.livescience.com/why-do-we-blink.html 19. https://i.pinimg.com/1200x/f7/a4/09/f7a40951e62342cf0671e34dcb8dbec2.jpg 20. https://apod.nasa.gov/diamond_jubilee/debate20.html 21. https://apod.nasa.gov/apod/ap231006.html 22. https://blogs.nasa.gov/webb/2023/09/12/webb-confirms-accuracy-of-universes-expansion-rate-measured-by-hubble-deepens-mystery-of-hubble-constant-tension/ 23. https://apod.nasa.gov/debate/debate.html 24. https://www.facebook.com/events/3492928810970281 25. https://apod.nasa.gov/apod/ap231010.html 26. https://apod.nasa.gov/apod/archivepix.html 27. https://apod.nasa.gov/apod/lib/apsubmit2015.html 28. https://apod.nasa.gov/apod/lib/aptree.html 29. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 30. https://apod.nasa.gov/apod/calendar/allyears.html 31. https://apod.nasa.gov/apod.rss 32. https://apod.nasa.gov/apod/lib/edlinks.html 33. https://apod.nasa.gov/apod/lib/about_apod.html 34. https://asterisk.apod.com/discuss_apod.php?date=231011 35. https://apod.nasa.gov/apod/ap231012.html 36. http://www.phy.mtu.edu/faculty/Nemiroff.html 37. http://www.phy.mtu.edu/ 38. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 39. http://www.astro.umd.edu/ 40. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 41. https://www.nasa.gov/about/highlights/HP_Privacy.html 42. https://astrophysics.gsfc.nasa.gov/ 43. https://www.nasa.gov/ 44. https://www.nasa.gov/centers/goddard/ 45. https://science.nasa.gov/learners 46. http://www.mtu.edu/