MSGID: 1:153/757.0 28a96765
TZUTC: -0700
CHRS: LATIN-1 2
                        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 September 13

            Aurora Australis and the International Space Station
                    Image Credit: NASA, ISS Expedition 71

   Explanation: This snapshot from the International Space Station was
   taken on August 11 while orbiting about 430 kilometers above the Indian
   Ocean, Southern Hemisphere, planet Earth. The spectacular view looks
   south and east, down toward the planet's horizon and through red and
   green curtains of aurora australis. The auroral glow is caused by
   emission from excited oxygen atoms in the extremely rarefied upper
   atmosphere still present at the level of the orbiting outpost. Green
   emission from atomic oxygen dominates this scene at altitudes of 100 to
   250 kilometers, while red emission from atomic oxygen can extend as
   high as 500 kilometers altitude. Beyond the glow of these southern
   lights, this view from low Earth orbit reveals the starry sky from a
   southern hemisphere perspective. Stars in Orion's belt and the Orion
   Nebula are near the Earth's limb just left of center. Sirius, alpha
   star of Canis Major and brightest star in planet Earth's night is above
   center along the right edge of the southern orbital skyscape.

              Looking Up: International Observe the Moon Night
                 Tomorrow's picture: If the Moon could smile
     __________________________________________________________________

       Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
            NASA Official: Phillip Newman Specific rights apply.
                NASA Web Privacy Policy and Important Notices
                      A service of: ASD at NASA / GSFC,
                           NASA Science Activation
                             & Michigan Tech. U.

--- BBBS/Li6 v4.10 Toy-7
 * Origin: The Rusty MailBox - Penticton, BC Canada (1:153/757)
SEEN-BY: 90/1 105/81 106/201 129/305 134/100 153/135 148 757 6809
SEEN-BY: 153/7083 7715 218/700 840 221/1 6 360 226/30 227/114 229/110
SEEN-BY: 229/114 206 307 317 400 426 428 470 664 700 240/1120 266/512
SEEN-BY: 282/1038 291/111 301/1 113 812 320/219 322/757 335/364 341/66
SEEN-BY: 342/200 396/45 460/58 256 1124 633/280 712/848 5020/400 1042
SEEN-BY: 5054/30 5075/35
PATH: 153/757 221/6 301/1 460/58 229/426