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 July 25 [2]See Explanation. Clicking on the picture will download the highest resolution version available. Cygnus Skyscape Image Credit & [3]Copyright: [4]Alistair Symon Explanation: In brush strokes of interstellar dust and glowing [5]hydrogen gas, this beautiful skyscape is painted across the plane of our [6]Milky Way Galaxy near the northern end of [7]the Great Rift and the constellation [8]Cygnus the Swan. Composed with three different telescopes and about 90 hours of image data the widefield mosaic spans an impressive 24 degrees across the sky. Alpha star of Cygnus, bright, hot, supergiant [9]Deneb lies near top center. Crowded with stars and luminous gas clouds Cygnus is also home to the dark, obscuring Northern Coal Sack Nebula, extending from Deneb toward the center of the view. The reddish glow of star forming regions NGC 7000, the [10]North America Nebula and IC 5070, the Pelican Nebula, are just left of Deneb. The [11]Veil Nebula is a standout below and left of center. A supernova remnant, the Veil is some 1,400 light years away, but many other nebulae and star clusters are [12]identifiable throughout the cosmic scene. Of course, Deneb itself is also known to northern hemisphere skygazers for its place in two [13]asterisms -- marking the top of the [14]Northern Cross and a vertex of the [15]Summer Triangle. Tomorrow's picture: pixels in space __________________________________________________________________ [16]< | [17]Archive | [18]Submissions | [19]Index | [20]Search | [21]Calendar | [22]RSS | [23]Education | [24]About APOD | [25]Discuss | [26]> __________________________________________________________________ Authors & editors: [27]Robert Nemiroff ([28]MTU) & [29]Jerry Bonnell ([30]UMCP) NASA Official: Phillip Newman [31]Specific rights apply. [32]NASA Web Privacy Policy and Important Notices A service of: [33]ASD at [34]NASA / [35]GSFC & [36]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/1907/CygnusMosaic07192000Symon.jpg 3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 4. http://www.woodlandsobservatory.com/ 5. https://apod.nasa.gov/apod/ap051223.html 6. https://asd.gsfc.nasa.gov/blueshift/index.php/2015/07/22/how-many-stars-in-the-milky-way/ 7. https://apod.nasa.gov/apod/ap161110.html 8. http://en.wikipedia.org/wiki/Cygnus_(constellation) 9. http://stars.astro.illinois.edu/sow/deneb.html 10. https://apod.nasa.gov/apod/ap171201.html 11. https://apod.nasa.gov/apod/ap121126.html 12. https://apod.nasa.gov/apod/ap170322.html 13. http://en.wikipedia.org/wiki/Asterism_(astronomy) 14. https://apod.nasa.gov/apod/ap031023.html 15. https://apod.nasa.gov/apod/ap150627.html 16. https://apod.nasa.gov/apod/ap190724.html 17. https://apod.nasa.gov/apod/archivepix.html 18. https://apod.nasa.gov/apod/lib/apsubmit2015.html 19. https://apod.nasa.gov/apod/lib/aptree.html 20. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 21. https://apod.nasa.gov/apod/calendar/allyears.html 22. https://apod.nasa.gov/apod.rss 23. https://apod.nasa.gov/apod/lib/edlinks.html 24. https://apod.nasa.gov/apod/lib/about_apod.html 25. http://asterisk.apod.com/discuss_apod.php?date=190725 26. https://apod.nasa.gov/apod/ap190726.html 27. http://www.phy.mtu.edu/faculty/Nemiroff.html 28. http://www.phy.mtu.edu/ 29. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 30. http://www.astro.umd.edu/ 31. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 32. https://www.nasa.gov/about/highlights/HP_Privacy.html 33. https://astrophysics.gsfc.nasa.gov/ 34. https://www.nasa.gov/ 35. https://www.nasa.gov/centers/goddard/ 36. http://www.mtu.edu/