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 31 [2]See Explanation. Clicking on the picture will download the highest resolution version available. IC 1795: The Fishhead Nebula Image Credit & Copyright: [3]Alan Pham Explanation: To some, this nebula looks like the head of a [4]fish. However, [5]this colorful cosmic portrait really features [6]glowing gas and obscuring dust clouds in IC 1795, a star forming region in the northern [7]constellation Cassiopeia. The nebula's colors were created by adopting the [8]Hubble color palette for mapping narrow emission from oxygen, hydrogen, and sulfur atoms to blue, green and red colors, and further blending the data with images of the region recorded through broadband filters. Not far on the sky from the famous [9]Double Star Cluster in Perseus, IC 1795 is itself located next to IC 1805, the [10]Heart Nebula, as part of a [11]complex of star forming regions that lie at the edge of a large molecular cloud. Located just over 6,000 [12]light-years away, the larger star forming complex sprawls along the Perseus spiral arm of our [13]Milky Way Galaxy. At that distance, this picture would span about 70 light-years across IC 1795. Astrophysicists: [14]Browse 2,000+ codes in the Astrophysics Source Code Library Tomorrow's picture: open space __________________________________________________________________ [15]< | [16]Archive | [17]Submissions | [18]Index | [19]Search | [20]Calendar | [21]RSS | [22]Education | [23]About APOD | [24]Discuss | [25]> __________________________________________________________________ Authors & editors: [26]Robert Nemiroff ([27]MTU) & [28]Jerry Bonnell ([29]UMCP) NASA Official: Phillip Newman [30]Specific rights apply. [31]NASA Web Privacy Policy and Important Notices A service of: [32]ASD at [33]NASA / [34]GSFC & [35]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/1907/FishheadNebula_Pham_2401.jpg 3. https://www.astrobin.com/users/PlanetOrion/ 4. https://en.wikipedia.org/wiki/Fish#/media/File:Lampanyctodes_hectoris_(Hector's_lanternfish)2.png 5. http://www.astrobin.com/407970/ 6. http://www-ssg.sr.unh.edu/ism/what1.html 7. https://en.wikipedia.org/wiki/Cassiopeia_(constellation) 8. http://bf-astro.com/hubblep.htm 9. https://apod.nasa.gov/apod/ap091204.html 10. https://apod.nasa.gov/apod/ap090214.html 11. http://www.atlasoftheuniverse.com/nebulae/ic1805.html 12. http://www.grc.nasa.gov/WWW/k-12/Numbers/Math/Mathematical_Thinking/how_long_is_a_light_year.htm 13. https://apod.nasa.gov/apod/ap080606.html 14. http://ascl.net/ 15. https://apod.nasa.gov/apod/ap190730.html 16. https://apod.nasa.gov/apod/archivepix.html 17. https://apod.nasa.gov/apod/lib/apsubmit2015.html 18. https://apod.nasa.gov/apod/lib/aptree.html 19. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 20. https://apod.nasa.gov/apod/calendar/allyears.html 21. https://apod.nasa.gov/apod.rss 22. https://apod.nasa.gov/apod/lib/edlinks.html 23. https://apod.nasa.gov/apod/lib/about_apod.html 24. http://asterisk.apod.com/discuss_apod.php?date=190731 25. https://apod.nasa.gov/apod/ap190801.html 26. http://www.phy.mtu.edu/faculty/Nemiroff.html 27. http://www.phy.mtu.edu/ 28. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 29. http://www.astro.umd.edu/ 30. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 31. https://www.nasa.gov/about/highlights/HP_Privacy.html 32. https://astrophysics.gsfc.nasa.gov/ 33. https://www.nasa.gov/ 34. https://www.nasa.gov/centers/goddard/ 35. http://www.mtu.edu/