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.

                                2022 March 6
   [2]An image of the Sun in three bands of ultraviolet light showing the
      transit circle of Venus, a deep coronal hole, and Please see the
                 explanation for more detailed information.

                    Venus and the Triply Ultraviolet Sun
     Image Credit: [3]NASA/[4]SDO & the AIA, EVE, and HMI teams; Digital
                        Composition: [5]Peter L. Dove

   Explanation: This was a very unusual type of solar eclipse. Typically,
   it is the [6]Earth's Moon that [7]eclipses the Sun. In 2012, though,
   the planet [8]Venus took a turn. Like a [9]solar eclipse by the Moon,
   the [10]phase of Venus became a continually thinner [11]crescent as
   Venus became increasingly better [12]aligned with the Sun. Eventually
   the alignment became perfect and the [13]phase of Venus dropped to
   zero. The [14]dark spot of Venus crossed our parent star. The situation
   could technically be labeled a Venusian [15]annular eclipse with an
   extraordinarily large [16]ring of fire. [17]Pictured here during the
   occultation, the Sun was imaged in three colors of [18]ultraviolet
   light by the Earth-orbiting [19]Solar Dynamics Observatory, with the
   dark region toward the right corresponding to a [20]coronal hole. Hours
   later, as Venus continued in its orbit, a [21]slight crescent phase
   appeared again. The next [22]Venusian transit across the Sun will occur
   in [23]2117.

                   Tomorrow's picture: a truth about orion
     __________________________________________________________________

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    Authors & editors: [35]Robert Nemiroff ([36]MTU) & [37]Jerry Bonnell
                                 ([38]UMCP)
          NASA Official: Phillip Newman [39]Specific rights apply.
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                A service of: [41]ASD at [42]NASA / [43]GSFC
                           & [44]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2203/SunVenusUv3_SdoDove_960.jpg
   3. https://www.nasa.gov/
   4. https://sdo.gsfc.nasa.gov/
   5. http://www.flickr.com/photos/pldove/
   6. http://en.wikipedia.org/wiki/Moon
   7. http://xjubier.free.fr/en/site_pages/SolarEclipsesGoogleMaps.html
   8. https://solarsystem.nasa.gov/planets/venus/in-depth/
   9. https://apod.nasa.gov/apod/ap121117.html
  10. http://astrosun2.astro.cornell.edu/academics/courses/astro201/venus_phase.htm
  11. https://apod.nasa.gov/apod/ap210725.html
  12. https://www.lifewithcats.tv/wp-content/uploads/2015/02/yhkjnmkjhgfdge.jpg
  13. https://apod.nasa.gov/apod/ap030810.html
  14. https://apod.nasa.gov/apod/ap120611.html
  15. https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-an-eclipse-58
  16. https://apod.nasa.gov/apod/ap200615.html
  17. http://www.flickr.com/photos/pldove/7344307970/in/photostream/
  18. https://science.nasa.gov/ems/10_ultravioletwaves
  19. https://sdo.gsfc.nasa.gov/
  20. https://apod.nasa.gov/apod/ap100828.html
  21. https://apod.nasa.gov/apod/ap130814.html
  22. https://en.wikipedia.org/wiki/Transit_of_Venus#Past_and_future_transits
  23. https://en.wikipedia.org/wiki/22nd_century#Transits_and_occultations
  24. https://apod.nasa.gov/apod/ap220305.html
  25. https://apod.nasa.gov/apod/archivepix.html
  26. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  27. https://apod.nasa.gov/apod/lib/aptree.html
  28. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  29. https://apod.nasa.gov/apod/calendar/allyears.html
  30. https://apod.nasa.gov/apod.rss
  31. https://apod.nasa.gov/apod/lib/edlinks.html
  32. https://apod.nasa.gov/apod/lib/about_apod.html
  33. http://asterisk.apod.com/discuss_apod.php?date=220306
  34. https://apod.nasa.gov/apod/ap220307.html
  35. http://www.phy.mtu.edu/faculty/Nemiroff.html
  36. http://www.phy.mtu.edu/
  37. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  38. http://www.astro.umd.edu/
  39. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  40. https://www.nasa.gov/about/highlights/HP_Privacy.html
  41. https://astrophysics.gsfc.nasa.gov/
  42. https://www.nasa.gov/
  43. https://www.nasa.gov/centers/goddard/
  44. http://www.mtu.edu/