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.

                                2021 June 20
     [2]The picture shows the Sun rising over the blocks of Stonehenge.
          Please see the explanation for more detailed information.

                      Sunrise Solstice over Stonehenge
         Image Credit & Copyright: [3]Max Alexander, [4]STFC, [5]SPL

   Explanation: Today the Sun reaches its northernmost point in planet
   Earth's sky. Called a [6]solstice, many cultures mark this date as a
   change of seasons -- from spring to summer in [7]Earth's Northern
   Hemisphere and from fall to winter in Earth's [8]Southern Hemisphere.
   Precisely, the single [9]time of solstice occurs today for some parts
   of the world, but tomorrow for other regions. The featured image was
   taken during the week of the 2008 summer [10]solstice at [11]Stonehenge
   in [12]United Kingdom, and captures a picturesque sunrise involving
   fog, trees, clouds, [13]stones placed about 4,500 years ago, and a 4.5
   billion year old [14]large glowing orb. Even given the [15]precession
   of the Earth's rotational axis over the millennia, the [16]Sun
   continues to [17]rise over [18]Stonehenge in an [19]astronomically
   significant way.

                   Tomorrow's picture: the tadpole's tale
     __________________________________________________________________

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    Authors & editors: [31]Robert Nemiroff ([32]MTU) & [33]Jerry Bonnell
                                 ([34]UMCP)
          NASA Official: Phillip Newman [35]Specific rights apply.
              [36]NASA Web Privacy Policy and Important Notices
                A service of: [37]ASD at [38]NASA / [39]GSFC
                           & [40]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2106/StonehengeSun_alexander_4200.jpg
   3. http://www.maxalexander.com/profile/
   4. https://stfc.ukri.org/
   5. https://www.sciencephoto.com/
   6. https://en.wikipedia.org/wiki/Solstice
   7. https://apod.nasa.gov/apod/ap070325.html
   8. https://apod.nasa.gov/apod/ap021222.html
   9. https://www.timeanddate.com/calendar/summer-solstice.html
  10. https://apod.nasa.gov/apod/ap190923.html
  11. https://en.wikipedia.org/wiki/Stonehenge
  12. https://www.cia.gov/the-world-factbook/countries/united-kingdom/
  13. https://www.youtube.com/watch?v=-6oxmxPKoSE
  14. https://solarsystem.nasa.gov/solar-system/sun/overview/
  15. https://visibleearth.nasa.gov/images/53974/earths-orbital-precession
  16. http://www.nasa.gov/sun
  17. https://www.english-heritage.org.uk/visit/places/stonehenge/things-to-do/solstice/
  18. http://www.english-heritage.org.uk/visit/places/Stonehenge
  19. https://en.wikipedia.org/wiki/Archaeoastronomy_and_Stonehenge
  20. https://apod.nasa.gov/apod/ap210619.html
  21. https://apod.nasa.gov/apod/archivepix.html
  22. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  23. https://apod.nasa.gov/apod/lib/aptree.html
  24. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  25. https://apod.nasa.gov/apod/calendar/allyears.html
  26. https://apod.nasa.gov/apod.rss
  27. https://apod.nasa.gov/apod/lib/edlinks.html
  28. https://apod.nasa.gov/apod/lib/about_apod.html
  29. http://asterisk.apod.com/discuss_apod.php?date=210620
  30. https://apod.nasa.gov/apod/ap210621.html
  31. http://www.phy.mtu.edu/faculty/Nemiroff.html
  32. http://www.phy.mtu.edu/
  33. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  34. http://www.astro.umd.edu/
  35. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  36. https://www.nasa.gov/about/highlights/HP_Privacy.html
  37. https://astrophysics.gsfc.nasa.gov/
  38. https://www.nasa.gov/
  39. https://www.nasa.gov/centers/goddard/
  40. http://www.mtu.edu/