﻿ 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 February 27 [2]A large filamentary nebula is shown dominated by red glow but with bits of blue on the lower left. The nebula is shown in a dense starfield surrounded by other faint red-glowing nebulae. Please see the explanation for more detailed information. Supernova Remnant Simeis 147 Image Credit & Copyright: [3]Stéphane Vetter ([4]Nuits sacrées) Explanation: It's easy to get lost following the intricate, looping, and twisting filaments of [5]supernova remnant Simeis 147. Also cataloged as Sharpless 2-240, the filamentary nebula goes by the popular nickname the Spaghetti Nebula. [6]Seen toward the boundary of the [7]constellations of the Bull ([8]Taurus) and the Charioteer ([9]Auriga), the impressive gas structure covers nearly 3 [10]degrees on the sky, equivalent to 6 [11]full moons. That's about 150 [12]light-years at the stellar debris cloud's estimated distance of 3,000 light-years. [13]This composite image includes data taken through narrow-band filters isolating emission from [14]hydrogen (red) and [15]oxygen (blue) glowing gas. The [16]supernova remnant has an estimated age of about 40,000 years, meaning light from this massive stellar explosion first reached the [17]Earth when [18]woolly mammoths roamed free. Besides the expanding remnant, this [19]cosmic catastrophe left behind a [20]pulsar: a spinning [21]neutron star that is the remnant of the original star's core. Tomorrow's picture: how night falls __________________________________________________________________ [22]< | [23]Archive | [24]Submissions | [25]Index | [26]Search | [27]Calendar | [28]RSS | [29]Education | [30]About APOD | [31]Discuss | [32]> __________________________________________________________________ Authors & editors: [33]Robert Nemiroff ([34]MTU) & [35]Jerry Bonnell ([36]UMCP) NASA Official: Amber Straughn; [37]Specific rights apply. [38]NASA Web Privacy Policy and Important Notices A service of: [39]ASD at [40]NASA / [41]GSFC, [42]NASA Science Activation & [43]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2402/Simeis147_Vetter_3000.jpg 3. https://www.facebook.com/stephane.vetter.nuitsacrees 4. http://www.nuitsacrees.fr/ 5. https://chandra.harvard.edu/xray_sources/supernovas.html 6. https://apod.nasa.gov/apod/ap101220.html 7. https://spaceplace.nasa.gov/constellations/ 8. https://en.wikipedia.org/wiki/Taurus_(constellation) 9. https://en.wikipedia.org/wiki/Auriga_(constellation) 10. https://www.1728.org/angsize.htm 11. https://apod.nasa.gov/apod/ap200925.html 12. https://spaceplace.nasa.gov/light-year/ 13. https://www.facebook.com/photo.php?fbid=7494042507273492 14. https://en.wikipedia.org/wiki/Hydrogen-alpha 15. https://periodic.lanl.gov/8.shtml 16. https://youtu.be/wymMn-SmALY 17. https://science.nasa.gov/earth/facts/ 18. https://en.wikipedia.org/wiki/Woolly_mammoth#/media/File:Woolly_mammoth_model_Royal_BC_Museum_in_Victoria.jpg 19. https://mfrost.typepad.com/photos/uncategorized/2008/01/11/boston_terror.jpg 20. https://en.wikipedia.org/wiki/Pulsar 21. https://apod.nasa.gov/apod/ap170501.html 22. https://apod.nasa.gov/apod/ap240226.html 23. https://apod.nasa.gov/apod/archivepix.html 24. https://apod.nasa.gov/apod/lib/apsubmit2015.html 25. https://apod.nasa.gov/apod/lib/aptree.html 26. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 27. https://apod.nasa.gov/apod/calendar/allyears.html 28. https://apod.com/feed.rss 29. https://apod.nasa.gov/apod/lib/edlinks.html 30. https://apod.nasa.gov/apod/lib/about_apod.html 31. https://asterisk.apod.com/discuss_apod.php?date=240227 32. https://apod.nasa.gov/apod/ap240228.html 33. http://www.phy.mtu.edu/faculty/Nemiroff.html 34. http://www.phy.mtu.edu/ 35. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 36. http://www.astro.umd.edu/ 37. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 38. https://www.nasa.gov/about/highlights/HP_Privacy.html 39. https://astrophysics.gsfc.nasa.gov/ 40. https://www.nasa.gov/ 41. https://www.nasa.gov/centers/goddard/ 42. https://science.nasa.gov/learners 43. http://www.mtu.edu/