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 April 11
         [2]The featured image shows a time-lapse silhouette of the
   International Space Station (ISS) crossing the face of the Sun. The Sun
   shows filaments, prominences and a sunspot. Please see the explanation
                       for more detailed information.

                     A Space Station Crosses a Busy Sun
         Image Credit & Copyright: [3]Wang Letian ([4]Eyes at Night)

   Explanation: Typically, the International Space Station is visible only
   at night. Slowly drifting across the night sky as it orbits the Earth,
   the [5]International Space Station (ISS) can be seen as a [6]bright
   spot several times a year from many locations. [7]The ISS is then
   visible only just after sunset or just before sunrise because it shines
   by reflected sunlight -- once the ISS enters the Earth's shadow, it
   will drop out of sight. The only occasion when the [8]ISS is visible
   during the day is when it [9]passes right in front of the Sun. Then, it
   passes so quickly that only cameras taking short exposures can visually
   freeze the [10]ISS's silhouette onto the background [11]Sun. The
   featured picture did exactly that -- it is actually a series of images
   taken earlier this month from [12]Beijing, [13]China with perfect
   timing. This image series was [14]later combined with separate images
   taken at nearly the same time but highlighting the [15]texture and
   activity on the busy [16]Sun. The solar activity included numerous
   gaseous [17]prominences seen around the edge, highlighted in red,
   [18]filaments seen against the Sun's face, and a dark [19]sunspot.

                     Tomorrow's picture: cosmic seahorse
     __________________________________________________________________

      [20]< | [21]Archive | [22]Submissions | [23]Index | [24]Search |
   [25]Calendar | [26]RSS | [27]Education | [28]About APOD | [29]Discuss |
                                    [30]>
     __________________________________________________________________

    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/2204/IssSunspot_Letian_2400.jpg
   3. http://www.luckwlt.com/About Me.html
   4. http://www.luckwlt.com/
   5. https://www.nasa.gov/mission_pages/station/main/index.html
   6. https://apod.nasa.gov/apod/ap110314.html
   7. https://spotthestation.nasa.gov/faq.cfm
   8. https://apod.nasa.gov/apod/ap160513.html
   9. https://apod.nasa.gov/apod/ap190715.html
  10. https://apod.nasa.gov/apod/ap150912.html
  11. https://solarsystem.nasa.gov/solar-system/sun/overview/
  12. https://youtu.be/efHyAyT4Fko
  13. https://en.wikipedia.org/wiki/China
  14. https://www.boredpanda.com/blog/wp-content/uploads/2016/02/adopted-cats-sleeping-together-hammock-barnaby-stoche-4.jpg
  15. https://apod.nasa.gov/apod/ap140312.html
  16. https://solarsystem.nasa.gov/solar-system/sun/overview/
  17. https://www.nasa.gov/content/goddard/what-is-a-solar-prominence
  18. https://scied.ucar.edu/learning-zone/sun-space-weather/solar-filament
  19. https://spaceplace.nasa.gov/solar-activity/en/
  20. https://apod.nasa.gov/apod/ap220410.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=220411
  30. https://apod.nasa.gov/apod/ap220412.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/