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 October 16
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                  BHB2007: A Baby Binary Star in Formation
    Image Credit: [3]ALMA ([4]ESO/[5]NAOJ/[6]NRAO), [7]F. O. Alves [8]et
                                     al.

   Explanation: How do binary stars form? To help find out, [9]ESO's
   [10]Atacama Large Millimeter Array ([11]ALMA) recently captured one of
   the highest resolution images yet taken of a binary star system in
   formation. Most [12]stars are not alone -- they typically form as part
   of a multiple star systems where star each orbits a common center of
   gravity. The two bright spots in the [13]featured image are small disks
   that surround the forming proto-stars in [BHB2007] 11, while the
   surrounding pretzel-shaped filaments are gas and dust that have been
   [14]gravitationally pulled from a larger disk. The [15]circumstellar
   filaments span roughly the radius of the orbit of [16]Neptune. The
   [17]BHB2007 system is a small part of the [18]Pipe Nebula (also known
   as [19]Barnard 59), a [20]photogenic network of [21]dust and gas that
   protrudes from [22]Milky Way's spiral disk in the [23]constellation of
   Ophiuchus. The [24]binary star formation process should be complete
   within a [25]few million years.

                       Tomorrow's picture: open space
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    Authors & editors: [37]Robert Nemiroff ([38]MTU) & [39]Jerry Bonnell
                                 ([40]UMCP)
          NASA Official: Phillip Newman [41]Specific rights apply.
              [42]NASA Web Privacy Policy and Important Notices
                A service of: [43]ASD at [44]NASA / [45]GSFC
                           & [46]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/1910/BabyBinary_Alma_1881.jpg
   3. http://www.almaobservatory.org/
   4. http://www.eso.org/public/
   5. http://www.nao.ac.jp/en/
   6. https://public.nrao.edu/
   7. http://www.mpe.mpg.de/person/37850/5947722
   8. https://ui.adsabs.harvard.edu/abs/2019arXiv191001141A/abstract
   9. http://www.eso.org/public/
  10. https://www.eso.org/sci/facilities/alma/about-alma.html
  11. https://en.wikipedia.org/wiki/Atacama_Large_Millimeter_Array
  12. https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
  13. https://www.eso.org/public/news/eso1916/
  14. https://www.eso.org/public/videos/eso1916b/
  15. https://ui.adsabs.harvard.edu/abs/2019arXiv191001141A/abstract
  16. https://solarsystem.nasa.gov/planets/neptune/overview/
  17. https://www.eso.org/public/videos/eso1916a/
  18. https://apod.nasa.gov/apod/ap121123.html
  19. https://en.wikipedia.org/wiki/Pipe_Nebula
  20. https://apod.nasa.gov/apod/ap180702.html
  21. https://apod.nasa.gov/apod/ap030706.html
  22. https://solarsystem.nasa.gov/resources/285/the-milky-way-galaxy/
  23. https://en.wikipedia.org/wiki/Ophiuchus
  24. https://apod.nasa.gov/apod/ap970219.html
  25. https://i.imgflip.com/2jx3bz.jpg
  26. https://apod.nasa.gov/apod/ap191015.html
  27. https://apod.nasa.gov/apod/archivepix.html
  28. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  29. https://apod.nasa.gov/apod/lib/aptree.html
  30. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  31. https://apod.nasa.gov/apod/calendar/allyears.html
  32. https://apod.nasa.gov/apod.rss
  33. https://apod.nasa.gov/apod/lib/edlinks.html
  34. https://apod.nasa.gov/apod/lib/about_apod.html
  35. http://asterisk.apod.com/discuss_apod.php?date=191016
  36. https://apod.nasa.gov/apod/ap191017.html
  37. http://www.phy.mtu.edu/faculty/Nemiroff.html
  38. http://www.phy.mtu.edu/
  39. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  40. http://www.astro.umd.edu/
  41. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  42. https://www.nasa.gov/about/highlights/HP_Privacy.html
  43. https://astrophysics.gsfc.nasa.gov/
  44. https://www.nasa.gov/
  45. https://www.nasa.gov/centers/goddard/
  46. http://www.mtu.edu/