Who Built This Mystery Circle On Mars? It looks like a circle, it’s most likely natural but it’s nice to dream. Facebook Prev Article Next Article Space Checkout these cool gadgets... Related Posts Take a Tour of Jupiter and Saturn How Many Arms Does Our Galaxy Have? 1 year on earth from 1 million miles away Space Pics That Amaze Scientists More Than 200,000 Apply For One-Way Trip to Mars NASA To Study Identical Twins—One On Earth, The Other In Space