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 September 27

         IFRAME: [2]https://www.youtube.com/embed/do4Cb__WhlY?rel=0

                     DART: Impact on Asteroid Dimorphos
                  Video Credit: [3]NASA, [4]JHUAPL, [5]DART

   Explanation: Could humanity deflect an asteroid headed for Earth? Yes.
   Deadly [6]impacts from large [7]asteroids have happened before in
   [8]Earth's past, sometimes causing [9]mass extinctions of life. To help
   protect our Earth from some [10]potential future impacts, NASA tested a
   new planetary defense mechanism yesterday by crashing the robotic
   [11]Double Asteroid Redirection Test (DART) spacecraft into
   [12]Dimorphos, a small asteroid spanning about 170-meters across. As
   shown in the [13]featured video, the impact was a success. Ideally, if
   impacted early enough, even the kick from a small spacecraft can
   deflect a large [14]asteroid enough to [15]miss the Earth. In the
   video, [16]DART is seen in a time-lapse video first passing larger
   [17]Didymos, on the left, and then approaching the smaller
   [18]Dimorphos. Although the video ends abruptly with DART's crash,
   observations monitoring the changed orbit of Dimorphos -- from
   [19]spacecraft and telescopes around the world -- [20]have just
   [21]begun.

                       Tomorrow's picture: furious sky
     __________________________________________________________________

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    Authors & editors: [33]Robert Nemiroff ([34]MTU) & [35]Jerry Bonnell
                                 ([36]UMCP)
          NASA Official: Phillip Newman [37]Specific rights apply.
              [38]NASA Web Privacy Policy and Important Notices
                A service of: [39]ASD at [40]NASA / [41]GSFC,
                         [42]NASA Science Activation
                           & [43]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.youtube.com/embed/do4Cb__WhlY?rel=0
   3. https://www.nasa.gov/
   4. https://www.jhuapl.edu/
   5. https://dart.jhuapl.edu/
   6. https://www.planetary.org/notable-asteroid-impacts-in-earths-history
   7. https://solarsystem.nasa.gov/asteroids-comets-and-meteors/asteroids/in-depth/
   8. https://solarsystem.nasa.gov/planets/earth/overview/
   9. https://astrobiology.nasa.gov/news/timeline-of-a-mass-extinction/
  10. https://cneos.jpl.nasa.gov/about/basics.html
  11. https://www.nasa.gov/planetarydefense/dart/dart-news
  12. https://solarsystem.nasa.gov/asteroids-comets-and-meteors/asteroids/didymos/in-depth/
  13. https://youtu.be/4RA8Tfa6Sck
  14. https://apod.nasa.gov/apod/ap210829.html
  15. https://apod.nasa.gov/apod/ap220809.html
  16. https://en.wikipedia.org/wiki/Double_Asteroid_Redirection_Test
  17. https://en.wikipedia.org/wiki/65803_Didymos
  18. https://en.wikipedia.org/wiki/Dimorphos
  19. https://universemagazine.com/en/space-telescopes-will-watch-as-dart-hits-the-target/
  20. https://youtu.be/fsZo1cxMqck
  21. https://lowell.edu/press-release-lowell-discovery-telescope-plays-key-role-in-dart-planetary-defense-test-mission/
  22. https://apod.nasa.gov/apod/ap220926.html
  23. https://apod.nasa.gov/apod/archivepix.html
  24. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  25. https://apod.nasa.gov/apod/lib/aptree.html
  26. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  27. https://apod.nasa.gov/apod/calendar/allyears.html
  28. https://apod.nasa.gov/apod.rss
  29. https://apod.nasa.gov/apod/lib/edlinks.html
  30. https://apod.nasa.gov/apod/lib/about_apod.html
  31. http://asterisk.apod.com/discuss_apod.php?date=220927
  32. https://apod.nasa.gov/apod/ap220928.html
  33. http://www.phy.mtu.edu/faculty/Nemiroff.html
  34. http://www.phy.mtu.edu/
  35. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  36. http://www.astro.umd.edu/
  37. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  38. https://www.nasa.gov/about/highlights/HP_Privacy.html
  39. https://astrophysics.gsfc.nasa.gov/
  40. https://www.nasa.gov/
  41. https://www.nasa.gov/centers/goddard/
  42. https://science.nasa.gov/learners
  43. http://www.mtu.edu/