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 The Science of Christopher Nolan’s Sci-Fi, Interstellar This Is How Astronauts Have Fun – They Make Viral ‘Space Oddity’ Videos 5 REAL Possibilities for Interstellar Travel Newly-Discovered Planet Has Four Parent Stars Mission to Pluto: The Story Behind the Historic Trip Why NASA won’t send humans to Venus