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 July 16 [2]A starfield is shown featuring many pillars of interstellar gas and dust, mostly in the center. Please see the explanation for more detailed information. Cometary Globules Image Credit & Copyright: [3]Mark Hanson & [4]Martin Pugh, [5]Observatorio El Sauce Explanation: What are these unusual interstellar structures? Bright-rimmed, flowing shapes gather near the center of [6]this rich starfield toward the borders of the nautical southern [7]constellations Pupis and Vela. Composed of interstellar gas and dust, the grouping of light-year sized cometary globules is about 1300 [8]light-years distant. Energetic ultraviolet light from nearby hot stars [9]has molded the globules and ionized their bright rims. [10]The globules also stream away from the [11]Vela supernova remnant which may have influenced their swept-back shapes. Within them, cores of cold gas and dust are likely [12]collapsing to form low mass stars, whose formation will ultimately cause the [13]globules to disperse. In fact, cometary globule CG 30 (on the upper left) sports a small reddish glow near its head, [14]a telltale sign of energetic jets from a star in the early stages [15]of formation. Tomorrow's picture: volcanic sky __________________________________________________________________ [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: Amber Straughn [31]Specific rights apply. [32]NASA Web Privacy, [33]Accessibility, [34]Notices; A service of: [35]ASD at [36]NASA / [37]GSFC, [38]NASA Science Activation & [39]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2407/CometaryGlobs_Pugh_4692.jpg 3. https://www.hansonastronomy.com/bio 4. https://www.martinpughastrophotography.space/about 5. https://obstech.cl/ 6. https://www.hansonastronomy.com/cg-30-cometary-globule 7. http://en.wikipedia.org/wiki/Argo_Navis 8. https://spaceplace.nasa.gov/light-year/ 9. https://apod.nasa.gov/apod/ap071215.html 10. http://arxiv.org/abs/astro-ph/0502285 11. https://apod.nasa.gov/apod/ap190110.html 12. https://pbs.twimg.com/media/BUCOEePIcAAht9h.jpg 13. https://apod.nasa.gov/apod/ap230104.html 14. https://ui.adsabs.harvard.edu/abs/1990MNRAS.242..419S/abstract 15. https://science.nasa.gov/mission/hubble/science/science-highlights/exploring-the-birth-of-stars/ 16. https://apod.nasa.gov/apod/ap240715.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.com/feed.rss 23. https://apod.nasa.gov/apod/lib/edlinks.html 24. https://apod.nasa.gov/apod/lib/about_apod.html 25. https://asterisk.apod.com/discuss_apod.php?date=240716 26. https://apod.nasa.gov/apod/ap240717.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://www.nasa.gov/general/accessibility/ 34. https://www.nasa.gov/privacy/ 35. https://astrophysics.gsfc.nasa.gov/ 36. https://www.nasa.gov/ 37. https://www.nasa.gov/centers/goddard/ 38. https://science.nasa.gov/learners 39. http://www.mtu.edu/