¿ 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. 2021 March 1 [2]See Explanation. Clicking on the picture will download the highest resolution version available. The Pelican Nebula in Red and Blue Image Credit & [3]Copyright: M. Petrasko, M. Evenden, [4]U. Mishra ([5]Insight Obs.) Explanation: The Pelican Nebula is changing. The entire nebula, officially designated IC 5070, is divided from the larger [6]North America Nebula by a [7]molecular cloud filled with dark [8]dust. The [9]Pelican, however, is particularly interesting because it is an unusually active mix of [10]star formation and evolving gas clouds. The [11]featured picture was processed to bring out two main colors, red and blue, with the red dominated by light emitted by interstellar [12]hydrogen. [13]Ultraviolet light emitted by young energetic stars is slowly transforming cold gas in the nebula to hot gas, with the [14]advancing boundary between the two, known as an [15]ionization front, visible in bright red across the image center. Particularly dense [16]tentacles of cold gas remain. Millions of years from now this nebula might no longer be known as the [17]Pelican, as the [18]balance and placement of stars and gas will surely leave something that [19]appears completely different. APOD in world languages: [20]Arabic, [21]Bulgarian, [22]Catalan, [23]Chinese (Beijing), [24]Chinese (Taiwan), [25]Croatian, [26]Czech, [27]Dutch, [28]Farsi, [29]French, [30]German, [31]Hebrew, [32]Indonesian, [33]Korean, [34]Montenegrin, [35]Polish, [36]Russian, [37]Serbian, [38]Slovenian, [39]Spanish, [40]Taiwanese, [41]Turkish, [42]Turkish, and [43]Ukrainian Tomorrow's picture: more from mars __________________________________________________________________ [44]< | [45]Archive | [46]Submissions | [47]Index | [48]Search | [49]Calendar | [50]RSS | [51]Education | [52]About APOD | [53]Discuss | [54]> __________________________________________________________________ Authors & editors: [55]Robert Nemiroff ([56]MTU) & [57]Jerry Bonnell ([58]UMCP) NASA Official: Phillip Newman [59]Specific rights apply. [60]NASA Web Privacy Policy and Important Notices A service of: [61]ASD at [62]NASA / [63]GSFC & [64]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2102/Pelican_PetraskoEtAl_3555.jpg 3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 4. https://www.instagram.com/mr_deepsky/ 5. https://www.insightobservatory.com/p/home-page.html 6. https://apod.nasa.gov/apod/ap000501.html 7. https://apod.nasa.gov/apod/ap201122.html 8. http://curator.jsc.nasa.gov/stardust/interstellardust.cfm 9. https://www.youtube.com/watch?v=m1jUJQyzv8M 10. https://apod.nasa.gov/apod/ap120722.html 11. https://www.astrobin.com/fxphu9/ 12. https://en.wikipedia.org/wiki/Hydrogen 13. https://science.nasa.gov/ems/10_ultravioletwaves 14. https://apod.nasa.gov/apod/ap180205.html 15. https://apod.nasa.gov/apod/ap031013.html 16. https://en.wikipedia.org/wiki/Tentacle#/media/File:Snail-front-0A.jpg 17. http://apod.nasa.gov/cgi-bin/apod/apod_search?tquery=Pelican 18. https://ui.adsabs.harvard.edu/abs/1980ApJ...239..121B/abstract 19. https://www.barkbusters.co.uk/images/articles/7a4120f095480e9f2a2ad2a165d90313.jpg 20. https://apod.me/ 21. https://mediabricks.bg/apod-bulgaria 22. http://www.apod.cat/ 23. http://www.bjp.org.cn/mryt/ 24. http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/apod.html 25. http://www.apod.rs/Croatia.html 26. http://www.astro.cz/apod/ 27. http://www.apod.nl/ 28. http://www.skypix.org/apod/ 29. http://www.cidehom.com/apod.php 30. http://www.starobserver.org/ 31. http://www.astronomia2009.org.il/info/apod/apod.htm 32. http://apod.infoastronomy.org/ 33. http://wouldyoulike.org/apod/ 34. http://www.apod.rs/Montenegro.html 35. http://apod.pl/apod/ 36. http://www.astronet.ru/db/apod.html 37. http://www.apod.rs/ 38. http://apod.fmf.uni-lj.si/ 39. http://observatorio.info/ 40. https://apod.tw/ 41. https://www.uzaydanhaberler.com/category/gorsel/apod/ 42. https://rasyonalist.org/kategori/apod/ 43. http://astronomy.pp.ua/ 44. https://apod.nasa.gov/apod/ap210228.html 45. https://apod.nasa.gov/apod/archivepix.html 46. https://apod.nasa.gov/apod/lib/apsubmit2015.html 47. https://apod.nasa.gov/apod/lib/aptree.html 48. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 49. https://apod.nasa.gov/apod/calendar/allyears.html 50. https://apod.nasa.gov/apod.rss 51. https://apod.nasa.gov/apod/lib/edlinks.html 52. https://apod.nasa.gov/apod/lib/about_apod.html 53. http://asterisk.apod.com/discuss_apod.php?date=210301 54. https://apod.nasa.gov/apod/ap210302.html 55. http://www.phy.mtu.edu/faculty/Nemiroff.html 56. http://www.phy.mtu.edu/ 57. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 58. http://www.astro.umd.edu/ 59. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 60. https://www.nasa.gov/about/highlights/HP_Privacy.html 61. https://astrophysics.gsfc.nasa.gov/ 62. https://www.nasa.gov/ 63. https://www.nasa.gov/centers/goddard/ 64. http://www.mtu.edu/