0 Posted in NASA February 26, 2020 by Bear Gullies on Mars Gullies on Mars form during the winter, made liquid by carbon dioxide frost. via NASA https://ift.tt/392pe9n Share This Article Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading... Related Tagged with: IFTTT, NASA Comments & Reviews Cancel replyYour email address will not be published. Required fields are marked *Your Comment or Review: * * Notify me of follow-up comments by email. Notify me of new posts by email. Δ Article Navigation < Previous Article First Flight of Saturn IB Next Article > Angela Mason-Butcher: Multidisciplinary Engineer