                        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.

                                2022 August 6

                                Stereo Phobos
     Image Credit: G. Neukum (FU Berlin) et al., Mars Express, DLR, ESA

   Explanation: Get out your red/blue glasses and float next to Phobos,
   grooved moon of Mars! Captured in 2004 by the High Resolution Stereo
   Camera on board ESA's Mars Express spacecraft, the image data was
   recorded at a distance of about 200 kilometers from the martian moon.
   This tantalizing stereo anaglyph view shows the Mars-facing side of
   Phobos. It highlights the asteroid-like moon's cratered and grooved
   surface. Up to hundreds of meters wide, the mysterious grooves may be
   related to the impact that created Stickney crater, the large crater at
   the left. Stickney crater is about 10 kilometers across, while Phobos
   itself is only around 27 kilometers across at its widest point.

              Tomorrow's picture: a galaxy and a grain of sand
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       Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
            NASA Official: Phillip Newman Specific rights apply.
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                      A service of: ASD at NASA / GSFC,
                           NASA Science Activation
                             & Michigan Tech. U.

