1.3M views · 4.4K reactions | A muddy, base-like structure has been spotted on the surface of Mars, sparking new curiosity and theories!  Is it a natural rock formation shaped by ancient winds and erosion or could it be a remnant of something artificial?  Mars continues to surprise us with its earth-like features from valleys to strange rock shapes leaving scientists wondering if life once existed there.  #space #SpaceX #NASA #fblifestyle | Space Journey | Facebook