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 January 8
    [2]Many images of Venus are shown superposed. Together, they make an
    arc from the top, around the left, to the bottom. The smallest images
    of Venus are at the top and show nearly complete circles. The largest
      are at the bottom and show thin crescent. phases. Please see the
                 explanation for more detailed information.

                             The Phases of Venus
              Image Credit & [3]License: [4]Stéphane Gonzales

   Explanation: Venus goes through [5]phases. Just like our Moon, [6]Venus
   can appear as a full circular disk, a thin [7]crescent, or anything in
   between. Venus, frequently the brightest object in the [8]post-sunset
   or [9]pre-sunrise sky, appears so small, however, that it usually
   requires binoculars or a small telescope to clearly see its current
   phase. The [10]featured time-lapse sequence was taken over the course
   of six months in 2015 from Surgères, [11]Charente-Maritime, [12]France,
   and shows not only how Venus changes phase, but changes angular size as
   well. When [13]Venus is on the far side of the Sun from the Earth, it
   appears angularly smallest and nearest to full phase, while when
   [14]Venus and Earth are on the same side of the Sun, [15]Venus appears
   larger, but as a crescent. [16]This month Venus rises before dawn in
   [17]waxing [18]gibbous [19]phases.

    Free APOD Lecture: [20]January 9, 2024 to the Amateur Astronomers of
                           Association of New York
                       Tomorrow's picture: Thor's hat
     __________________________________________________________________

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    Authors & editors: [32]Robert Nemiroff ([33]MTU) & [34]Jerry Bonnell
                                 ([35]UMCP)
          NASA Official: Phillip Newman [36]Specific rights apply.
              [37]NASA Web Privacy Policy and Important Notices
                A service of: [38]ASD at [39]NASA / [40]GSFC,
                         [41]NASA Science Activation
                           & [42]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2401/VenusPhases_Gonzales_1280.jpg
   3. https://creativecommons.org/licenses/by/4.0/legalcode
   4. https://www.flickr.com/people/stephane-gonzalez/
   5. https://en.wikipedia.org/wiki/Phases_of_Venus
   6. https://science.nasa.gov/venus/
   7. https://apod.nasa.gov/apod/ap230826.html
   8. https://apod.nasa.gov/apod/ap230102.html
   9. https://apod.nasa.gov/apod/ap160130.html
  10. https://www.iau.org/public/images/detail/ann23043a/
  11. https://youtu.be/nAlTvNII1O8
  12. https://en.wikipedia.org/wiki/France
  13. https://apod.nasa.gov/cgi-bin/apod/apod_search?tquery=Venus
  14. https://earthsky.org/astronomy-essentials/five-petals-of-venus/
  15. https://img.freepik.com/premium-photo/adorable-striped-cat-looking-up-cat-portrait-close-up_199743-10939.jpg
  16. https://earthsky.org/upl/2023/01/Venus-elongation-north-sunrise-2023-Guy-Ottewell.jpg
  17. https://spaceplace.nasa.gov/moon-phases/
  18. https://apod.nasa.gov/apod/ap231112.html
  19. https://spaceplace.nasa.gov/moon-phases/
  20. https://aaa.org/event/2023-astronomy-picture-of-the-day/
  21. https://apod.nasa.gov/apod/ap240107.html
  22. https://apod.nasa.gov/apod/archivepix.html
  23. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  24. https://apod.nasa.gov/apod/lib/aptree.html
  25. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  26. https://apod.nasa.gov/apod/calendar/allyears.html
  27. https://apod.com/feed.rss
  28. https://apod.nasa.gov/apod/lib/edlinks.html
  29. https://apod.nasa.gov/apod/lib/about_apod.html
  30. https://asterisk.apod.com/discuss_apod.php?date=240108
  31. https://apod.nasa.gov/apod/ap240109.html
  32. http://www.phy.mtu.edu/faculty/Nemiroff.html
  33. http://www.phy.mtu.edu/
  34. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  35. http://www.astro.umd.edu/
  36. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  37. https://www.nasa.gov/about/highlights/HP_Privacy.html
  38. https://astrophysics.gsfc.nasa.gov/
  39. https://www.nasa.gov/
  40. https://www.nasa.gov/centers/goddard/
  41. https://science.nasa.gov/learners
  42. http://www.mtu.edu/