What do you think this photo from Mars below represents? Is it a Convex Object or Concave Crater? Many of my friends argued on this one, before I gave them true answer. NASA said it shows “Victoria crater,” an impact crater at Meridiani Planum – near the equator of Mars. The crater is approximately 800 meters (half a mile) in diameter. Peter Hosey sent in this fabulous illusion. He said that it “Looks like a convex object, but that’s actually a crater — the Victoria Crater at Meridian Planum on Mars, photographed by the Mars Reconnaissance Orbiter.”
