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.

                              2025 September 14

         IFRAME: [2]https://www.youtube.com/embed/my1euFQHH-o?rel=0

                Planets of the Solar System: Tilts and Spins
    Video Credit: [3]NASA, Animation: [4]James O'Donoghue ([5]U. Reading)

   Explanation: How does your favorite planet spin? Does it spin rapidly
   around a nearly vertical axis, or horizontally, or backwards? The
   [6]featured video animates [7]NASA images of [8]all eight planets in
   [9]our Solar System to show them [10]spinning side-by-side for an easy
   comparison. In the [11]time-lapse video, a day on Earth -- one Earth
   rotation -- takes just a few seconds. [12]Jupiter rotates the fastest,
   while [13]Venus spins not only the slowest (can you see it?), but
   backwards. The inner rocky planets across the top underwent
   [14]dramatic spin-altering collisions during the early days of the
   Solar System. Why planets spin and tilt as they do remains a [15]topic
   of research with much insight gained from modern [16]computer modeling
   and the recent discovery and analysis of hundreds of [17]exoplanets:
   planets [18]orbiting other stars.

                        Tomorrow's picture: sun belch
     __________________________________________________________________

      [19]< | [20]Archive | [21]Submissions | [22]Index | [23]Search |
   [24]Calendar | [25]RSS | [26]Education | [27]About APOD | [28]Discuss |
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     __________________________________________________________________

    Authors & editors: [30]Robert Nemiroff ([31]MTU) & [32]Jerry Bonnell
                                 ([33]UMCP)
          NASA Official: Amber Straughn [34]Specific rights apply.
            [35]NASA Web Privacy, [36]Accessibility, [37]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://www.youtube.com/embed/my1euFQHH-o?rel=0
   3. https://www.nasa.gov/
   4. https://bsky.app/profile/interplanetary.bsky.social
   5. https://www.reading.ac.uk/meteorology/
   6. https://www.youtube.com/watch?v=my1euFQHH-o
   7. https://www.nasa.gov/
   8. https://apod.nasa.gov/apod/ap060828.html
   9. https://science.nasa.gov/solar-system/solar-system-facts/
  10. https://youtu.be/qhJrpzsKEXo
  11. https://www.youtube.com/embed/my1euFQHH-o
  12. https://science.nasa.gov/jupiter/
  13. https://science.nasa.gov/venus/
  14. https://www.youtube.com/watch?v=lEIGjXbtQwY
  15. http://allwallps.com/bin/02/54/72a.jpg
  16. https://ui.adsabs.harvard.edu/abs/2001Natur.411..767C/abstract
  17. https://science.nasa.gov/exoplanets/
  18. https://apod.nasa.gov/apod/ap151205.html
  19. https://apod.nasa.gov/apod/ap250913.html
  20. https://apod.nasa.gov/apod/archivepix.html
  21. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  22. https://apod.nasa.gov/apod/lib/aptree.html
  23. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  24. https://apod.nasa.gov/apod/calendar/allyears.html
  25. https://apod.com/feed.rss
  26. https://apod.nasa.gov/apod/lib/edlinks.html
  27. https://apod.nasa.gov/apod/lib/about_apod.html
  28. https://asterisk.apod.com/discuss_apod.php?date=250914
  29. https://apod.nasa.gov/apod/ap250915.html
  30. http://www.phy.mtu.edu/faculty/Nemiroff.html
  31. http://www.phy.mtu.edu/
  32. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  33. http://www.astro.umd.edu/
  34. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  35. https://www.nasa.gov/about/highlights/HP_Privacy.html
  36. https://www.nasa.gov/general/accessibility/
  37. https://www.nasa.gov/privacy/
  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/