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.

                                2023 March 20

         IFRAME: [2]https://www.youtube.com/embed/wfzz8FUD4TM?rel=0

                        M1: The Expanding Crab Nebula
                Video Credit & Copyright: [3]Detlef Hartmann

   Explanation: Are your eyes good enough to see the Crab Nebula expand?
   The Crab Nebula is cataloged as M1, the first on [4]Charles Messier's
   famous [5]list of things which are [6]not comets. In fact, [7]the Crab
   is now known to be a [8]supernova remnant, an expanding cloud of debris
   from the explosion of a massive star. The [9]violent birth of the Crab
   was [10]witnessed by astronomers in the year 1054. Roughly 10
   [11]light-years across today, the nebula is still [12]expanding at a
   rate of over 1,000 kilometers per second. Over the past decade, its
   expansion has been documented in this [13]stunning [14]time-lapse
   movie. In each year from 2008 to 2022, an image was produced with the
   same telescope and camera from a remote observatory in [15]Austria. The
   sharp, processed frames even reveal the [16]dynamic energetic emission
   surrounding the rapidly [17]spinning pulsar at the center. The [18]Crab
   Nebula lies about 6,500 light-years away [19]toward the constellation
   of the Bull ([20]Taurus).

                     Tomorrow's picture: beautiful dust
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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://www.youtube.com/embed/wfzz8FUD4TM?rel=0
   3. https://www.astrobin.com/users/DetlefHartmann/
   4. https://en.wikipedia.org/wiki/Charles_Messier
   5. https://en.wikipedia.org/wiki/Messier_object
   6. https://apod.nasa.gov/apod/ap110901.html
   7. https://apod.nasa.gov/apod/ap230115.html
   8. https://imagine.gsfc.nasa.gov/science/objects/supernova_remnants.html
   9. https://www.youtube.com/watch?v=aysiMbgml5g
  10. http://messier.seds.org/more/m001_sn.html
  11. https://spaceplace.nasa.gov/light-year/
  12. https://www.youtube.com/watch?v=ccsvJMkF5Bs
  13. https://d.newsweek.com/en/full/2040076/startled-cat-looks-camera.webp
  14. https://www.astrobin.com/ija7jc/B/
  15. https://en.wikipedia.org/wiki/Austria
  16. https://chandra.harvard.edu/photo/2002/0052/animations.html
  17. https://apod.nasa.gov/apod/ap220821.html
  18. https://apod.nasa.gov/apod/ap180909.html
  19. https://youtu.be/oJ9qJFQ0EE8
  20. https://en.wikipedia.org/wiki/Taurus_(constellation)
  21. https://apod.nasa.gov/apod/ap230319.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.nasa.gov/apod.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=230320
  31. https://apod.nasa.gov/apod/ap230321.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/