﻿ 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. 2024 April 28 [2]In the center is a colorful nebula, the most usually seen part of the Ring Nebula. Several layers of red-glowing gas with different structures are seen surrounding this center. Please see the explanation for more detailed information. Rings Around the Ring Nebula Image Credit: [3]Hubble, [4]Large Binocular Telescope, [5]Subaru Telescope; Composition & Copyright: [6]Robert Gendler Explanation: The [7]Ring Nebula (M57) is more complicated than it appears through a small telescope. The easily visible [8]central ring is about one [9]light-year across, but [10]this remarkably deep exposure - a [11]collaborative effort combining data from three different large telescopes - [12]explores the looping filaments of glowing gas extending much farther from [13]the nebula's central star. This [14]composite image includes red light emitted by hydrogen as well as visible and [15]infrared light. The Ring Nebula is an elongated [16]planetary nebula, a type of nebula created when a [17]Sun-like star evolves to [18]throw off its outer atmosphere and become a [19]white dwarf star. The [20]Ring Nebula is about 2,500 light-years away toward the musical [21]constellation Lyra. Your Sky Surprise: [22]What picture did APOD feature on your birthday? (post 1995) Tomorrow's picture: comet, planet, moon __________________________________________________________________ [23]< | [24]Archive | [25]Submissions | [26]Index | [27]Search | [28]Calendar | [29]RSS | [30]Education | [31]About APOD | [32]Discuss | [33]> __________________________________________________________________ Authors & editors: [34]Robert Nemiroff ([35]MTU) & [36]Jerry Bonnell ([37]UMCP) NASA Official: Amber Straughn [38]Specific rights apply. [39]NASA Web Privacy, [40]Accessibility, [41]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/2404/M57Ring_HubbleGendler_3000.jpg 3. https://hla.stsci.edu/ 4. https://www.lbto.org/ 5. https://subarutelescope.org/en/ 6. http://www.robgendlerastropics.com/Biography2.html 7. https://en.wikipedia.org/wiki/Ring_nebula 8. https://apod.nasa.gov/apod/ap230402.html 9. http://chandra.harvard.edu/photo/cosmic_distance.html 10. http://www.robgendlerastropics.com/M57-HST-LBT.html 11. https://i.ytimg.com/vi/t8tjT9MA7yU/hqdefault.jpg 12. https://ui.adsabs.harvard.edu/abs/2004A&A...417..637C/abstract 13. https://apod.nasa.gov/apod/ap210721.html 14. http://www.robgendlerastropics.com/M57-HST-LBT.html 15. https://science.nasa.gov/ems/07_infraredwaves 16. https://astronomy.swin.edu.au/cosmos/p/Planetary+Nebulae 17. https://apod.nasa.gov/apod/ap230611.html 18. https://www.youtube.com/watch?v=6FSIfUYFeTM 19. https://imagine.gsfc.nasa.gov/science/objects/dwarfs2.html 20. https://www.youtube.com/watch?v=OiYRL3HFULU 21. http://www.hawastsoc.org/deepsky/lyr/index.html 22. https://apod.nasa.gov/apod/calendar/allyears.html 23. https://apod.nasa.gov/apod/ap240427.html 24. https://apod.nasa.gov/apod/archivepix.html 25. https://apod.nasa.gov/apod/lib/apsubmit2015.html 26. https://apod.nasa.gov/apod/lib/aptree.html 27. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 28. https://apod.nasa.gov/apod/calendar/allyears.html 29. https://apod.com/feed.rss 30. https://apod.nasa.gov/apod/lib/edlinks.html 31. https://apod.nasa.gov/apod/lib/about_apod.html 32. https://asterisk.apod.com/discuss_apod.php?date=240428 33. https://apod.nasa.gov/apod/ap240429.html 34. http://www.phy.mtu.edu/faculty/Nemiroff.html 35. http://www.phy.mtu.edu/ 36. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 37. http://www.astro.umd.edu/ 38. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 39. https://www.nasa.gov/about/highlights/HP_Privacy.html 40. https://www.nasa.gov/general/accessibility/ 41. https://www.nasa.gov/privacy/ 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/