Mars Rover Finds Life's Secret Ingredients Hidden in Ancient Rocks

NASA's Curiosity rover discovered special molecules on Mars that are connected to how life works on Earth—some of them billions of years old! These molecules were preserved in rocks that contained water long ago, and one discovery looks similar to the building blocks that make up DNA [the instruction manual inside living cells]. While this doesn't prove there was life on Mars, it shows that the Red Planet might have been a much better place for life to exist a very long time ago!