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. 2019 August 21 [2]See Explanation. Moving the cursor over the image will bring up an annotated version. Clicking on the image will bring up the highest resolution version available. The Orion You Can Almost See Image Credit & Copyright: [3]John Gleason & [4]Rogelio Bernal Andreo Explanation: Do you recognize this constellation? Although it is one of the [5]most recognizable star groupings on the sky, [6]this is a [7]more full Orion than you can see -- an Orion only revealed with long exposure digital camera imaging and [8]post-processing. Here the cool [9]red giant [10]Betelgeuse takes on a strong orange tint as the brightest star at the lower left. Orion's hot blue stars are numerous, with [11]supergiant [12]Rigel balancing Betelgeuse on the upper right, and [13]Bellatrix at the upper left. Lined up in [14]Orion's belt are three stars [15]all about 1,500 [16]light-years away, born from the constellation's well-studied [17]interstellar clouds. To the right of Orion's belt is a bright but fuzzy patch that might also [18]look familiar -- the stellar nursery known as [19]Orion's Nebula. Finally, just barely visible to the [20]unaided eye but quite striking here is [21]Barnard's Loop -- a huge gaseous emission nebula surrounding Orion's Belt and Nebula discovered over 100 years ago by the pioneering Orion photographer [22]E. E. Barnard. APOD Podcasts: Available on [23]iTunes and [24]YouTube. Tomorrow's picture: southern galaxy __________________________________________________________________ [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]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/1908/OrionDeep_GleasonAndreo_2048.jpg 3. https://www.astrobin.com/users/dvj/ 4. https://en.wikipedia.org/wiki/Rogelio_Bernal_Andreo 5. https://en.wikipedia.org/wiki/Orion_(constellation) 6. https://c1.staticflickr.com/1/797/39937927085_a53d44956a_o.jpg 7. https://apod.nasa.gov/apod/ap151123.html 8. http://cdn-www.cracked.com/articleimages/ob/old_computer.jpg 9. https://en.wikipedia.org/wiki/Red_giant 10. https://apod.nasa.gov/apod/ap100106.html 11. https://en.wikipedia.org/wiki/Supergiant_star 12. https://apod.nasa.gov/apod/ap180115.html 13. http://earthsky.org/tonight/bellatrix-orions-third-brightest-means-female-warrior 14. https://apod.nasa.gov/apod/ap170604.html 15. https://www.youtube.com/watch?v=lD-5ZOipE48 16. https://www.grc.nasa.gov/www/k-12/Numbers/Math/Mathematical_Thinking/how_long_is_a_light_year.htm 17. http://astronomy.swin.edu.au/cosmos/I/Interstellar+Gas+Cloud 18. https://www.youtube.com/watch?v=-EjukzL-bJc 19. https://apod.nasa.gov/apod/ap171129.html 20. https://www.aoa.org/patients-and-public/resources-for-teachers/how-your-eyes-work 21. https://en.wikipedia.org/wiki/Barnard's_Loop 22. https://en.wikipedia.org/wiki/Edward_Emerson_Barnard 23. https://podcasts.apple.com/us/podcast/astronomy-photo-of-the-day-2019/id428500031 24. https://www.youtube.com/channel/UCWksELVw1LfYg6TiLQyjByw/featured 25. https://apod.nasa.gov/apod/ap190820.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. http://asterisk.apod.com/discuss_apod.php?date=190821 35. https://apod.nasa.gov/apod/ap190822.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. http://www.mtu.edu/