What do we know about Mars? Mars the fourth planet from the Sun, it's smaller than Earth, has weak gravity and it's red. Or is it? A photo has been released showing an area cover by the sea of sand dunes on Mars. They look absolutely stunning but leave us with many questions. What are those dunes and why are they blue? #brightside Preview photo credit: Blue Dunes on the Red Planet: By NASA/JPL-Caltech/ASU, https://www.nasa.gov/image-feature/blue-dunes-on-the-red-planet Credit: NASA/JPL-Caltech/Univ. of Arizon NASA/JPL/Cornell NASA/JPL/Corby Waste NASA/JPL NASA/JHUAPL/SwRI The Arecibo message as sent 1974 from the Arecibo Observatory: By Wikimedia, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, https://commons.wikimedia.org/w/index.php?curid=365105 Animation is created by Bright Side. —————————————————————————————-
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