The magnificent central disk of our Milky Way Galaxy arches over the aged Toadstool hoodoos rock formations in northern Arizona, USA. Image credit David Lane & R. Gendler
The unusual Toadstool rock caps are relatively hard sandstone that wind has eroded more slowly than the softer sandstone underneath. The green bands are airglow, light emitted by the stimulated air in Earth’s atmosphere. On the lower right is a time-lapse camera set up to capture the sky rotating behind the picturesque foreground scene.
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