﻿ 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 April 16 [2]Complex filaments of many colors cross the image in front of a starry background. Some regions have a diffuse red or orange glow. Please see the explanation for more detailed information. Filaments of the Vela Supernova Remnant Image Credit: [3]CTIO, [4]NOIRLab, [5]DOE, [6]NSF, [7]AURA; Processing: [8]T. A. Rector ([9]U. Alaska Anchorage), [10]M. Zamani & D. de Martin ([11]’s [12]NOIRLab) Explanation: The explosion is over, but the consequences continue. About eleven thousand years ago, a star in the constellation of [13]Vela could be seen to [14]explode, creating a strange point of light briefly visible to humans living near the beginning of [15]recorded history. The outer layers of the star crashed into the [16]interstellar medium, driving a [17]shock wave that is still visible today. The [18]featured image captures some of that filamentary and gigantic shock in [19]visible light. As gas flies away from the detonated star, it [20]decays and reacts with the interstellar medium, producing light in many different colors and energy bands. Remaining at the center of the [21]Vela Supernova Remnant is a [22]pulsar, a star as dense as nuclear matter that [23]spins around more than ten times in a single second. Monday's Eclipse Imagery: [24]Notable Submissions to APOD Tomorrow's picture: two eclipse comets __________________________________________________________________ [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: Amber Straughn [40]Specific rights apply. [41]NASA Web Privacy, [42]Accessibility, [43]Notices; A service of: [44]ASD at [45]NASA / [46]GSFC, [47]NASA Science Activation & [48]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2404/VelaSnr_CTIO_3989.jpg 3. https://noirlab.edu/public/programs/ctio/ 4. https://noirlab.edu/ 5. https://www.energy.gov/ 6. https://www.nsf.gov/ 7. https://www.aura-astronomy.org/ 8. http://aftar.uaa.alaska.edu/ 9. https://www.uaa.alaska.edu/ 10. https://mahdizamani.com/about 11. https://www.nsf.gov/ 12. https://noirlab.edu/ 13. https://apod.nasa.gov/apod/ap190110.html 14. https://youtu.be/wymMn-SmALY 15. https://en.wikipedia.org/wiki/Cave_painting 16. https://apod.nasa.gov/apod/ap130924.html 17. https://apod.nasa.gov/apod/ap210414.html 18. https://noirlab.edu/public/images/noirlab2406a/ 19. https://science.nasa.gov/ems/09_visiblelight/ 20. https://imagine.gsfc.nasa.gov/observatories/satellite/compton/snr.html 21. https://en.wikipedia.org/wiki/Vela_Supernova_Remnant 22. https://imagine.gsfc.nasa.gov/science/objects/neutron_stars1.html 23. https://youtu.be/jv2rEa7iqhA 24. https://www.facebook.com/media/set/?set=a.410844681644115&type=3 25. https://apod.nasa.gov/apod/ap240415.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.com/feed.rss 32. https://apod.nasa.gov/apod/lib/edlinks.html 33. https://apod.nasa.gov/apod/lib/about_apod.html 34. https://asterisk.apod.com/discuss_apod.php?date=240416 35. https://apod.nasa.gov/apod/ap240417.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://www.nasa.gov/general/accessibility/ 43. https://www.nasa.gov/privacy/ 44. https://astrophysics.gsfc.nasa.gov/ 45. https://www.nasa.gov/ 46. https://www.nasa.gov/centers/goddard/ 47. https://science.nasa.gov/learners 48. http://www.mtu.edu/