Rainbow Eucalyptus Trees, Maui, Hawaii, USA - There is a small forest of these trees off the Hana Highway. As the outer bark naturally sheds it leaves strips of green inner bark exposed and as it grows the inner bark turns bluish, orange, purple and maroon.
So amazing! A dune field on Mars in the north, less than 400 km from the north pole. During the Martian winter, carbon dioxide freezes out of the air. In the summer the CO2 turns directly from a solid to a gas disturbing the sand which falls down the slopes in little channels spreading out when it hits the bottom. This disturbs the red dust, which flows with the sand creating the feathery tendrils seen here