Are these trees on Mars? (No…but they sure do look like trees!)
From the HiRISE imager on the Mar Reconnaisance Orbiter, these “trees” are actually dark sand streaks cascading down dunes near the north pole of Mars.
Images from the cosmos get ever more interesting the further we explore and the farther we can see with modern imaging technology. For the planet Mars, this has meant HiRISE, the High Resolution Imaging Science Experiment. And boy, what an experiment! Its imager can resolve objects on the Martian surface of roughly a third of a meter, and in 2006 it began capturing and beaming these high resolution images back to Earth…
by Dave Pardue