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. 2023 June 22 [2]See Explanation. Clicking on the picture will download the highest resolution version available. Stars and Dust across Corona Australis Image Credit & [3]Copyright: [4]Alessandro Cipolat Bares Explanation: Cosmic dust clouds cross a rich field of stars in this telescopic vista near the northern boundary of [5]Corona Australis, the Southern Crown. Part of a sprawling molecular cloud complex this star forming region is a mere 500 light-years away. That's about one third the distance of the more famous stellar nursery known as the Orion Nebula. The 2 degree wide frame would span 15 light-years at the clouds' estimated distance. [6]Mixed with bright nebulosities the dust clouds effectively [7]block light from more distant background stars in the [8]Milky Way and obscure from view embedded stars [9]still in the process of formation. Large dark nebula Bernes 157 is on the left. To its right are [10]a group of pretty reflection nebulae cataloged as NGC 6726, 6727, 6729, and IC 4812. Their characteristic blue color is produced as light from hot stars is reflected by the cosmic dust. The more compact NGC 6729 surrounds young variable star [11]R Coronae Australis. Just below it, filamentary arcs and loops are identified as [12]Herbig Haro objects associated with energetic newborn stars. In fact, at the heart of this area lies the [13]Coronet Cluster, one of the nearest and most active [14]star forming regions. Tomorrow's picture: the condor galaxy __________________________________________________________________ [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/2306/corona_aus.jpg 3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 4. https://www.juzaphoto.com/galleria.php?cat=6&srt=mcommento&show=1&tempo=&l=it 5. http://www.botproductions.com/stellar/corona_australis.html 6. https://ui.adsabs.harvard.edu/abs/1977A&AS...29...65B/abstract 7. https://apod.nasa.gov/apod/ap090425.html 8. http://members.nova.org/~sol/chview/chv5.htm 9. http://arxiv.org/abs/1211.6945 10. https://apod.nasa.gov/apod/image/0407/ngc6726_wide_tanlbl1.jpg 11. http://www.solstation.com/stars/r-coraus.htm 12. https://apod.nasa.gov/apod/ap111027.html 13. https://chandra.harvard.edu/photo/2007/coronet/ 14. https://ui.adsabs.harvard.edu/abs/2008hsf2.book..735N/abstract 15. https://apod.nasa.gov/apod/ap230621.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=230622 25. https://apod.nasa.gov/apod/ap230623.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/