Glass Hills of Mars
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[Image: An otherwise randomly grabbed image of Mars from the fantastic HiRISE site].
In a paper called "Widespread weathered glass on the surface of Mars," authors Briony Horgan and James F. Bell III, from the School of Earth and Space Exploration at Arizona State University, go on to suggest that "the ubiquitous dusty mantle covering much of the northern plains [of Mars] may obscure more extensive glass deposits" yet to be mapped.
Although it's worth emphasizing that this glass is present mostly in the form of "Eolian" grains—that is, small pieces of windblown sand accumulating in dune fields—it is, nonetheless, a sublime scene to consider, with endless glass ridges and hills rolling off beneath stars and red dust storms, slippery to the touch, as hard as bedrock, cold, perhaps glistening and prismatic inside with distorted reflections of constellations, like blisters of light on a television screen coextensive with the surface of the planet. You could slide from one hill to the next, for hours—for days—alone on a frozen ocean of self-reflecting landforms, dizzy with the images locked within.
(What would a glass farm look like, agriculture carved into crystalline ridges, cultivating strange geologies? Meanwhile, ages ago, in a different lifetime on BLDGBLOG: Mount St. Helens of Glass).