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                        Astronomy Picture of the Day

    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 November 20

                             Earthset from Orion
                        Image Credit: NASA, Artemis 1

   Explanation: Eight billion people are about to disappear in this
   snapshot from space taken on 2022 November 21. On the sixth day of the
   Artemis I mission, their home world is setting behind the Moon's bright
   edge as viewed by an external camera on the outbound Orion spacecraft.
   Orion was headed for a powered flyby that took it to within 130
   kilometers of the lunar surface. Velocity gained in the flyby maneuver
   was used to reach a distant retrograde orbit around the Moon. That
   orbit is considered distant because it's another 92,000 kilometers
   beyond the Moon, and retrograde because the spacecraft orbited in the
   opposite direction of the Moon's orbit around planet Earth. Orion
   entered its distant retrograde orbit on November 25. Swinging around
   the Moon, Orion reached a maximum distance (just over 400,000
   kilometers) from Earth on November 28, exceeding a record set by Apollo
   13 for most distant spacecraft designed for human space exploration.
   The Artemis II mission, carrying 4 astronauts around the moon and back
   again, is scheduled to launch no earlier than September 2025.

                     Tomorrow's picture: pixels in space
     __________________________________________________________________

       Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
            NASA Official: Amber Straughn Specific rights apply.
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                      A service of: ASD at NASA / GSFC,
                           NASA Science Activation
                             & Michigan Tech. U.

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