This week we feasted on mysteries hiding deep inside the body and in the deepest universe. We learned about German scientists who figured out how tumor cells tunnel through vessel walls and then hitch a ride in the bloodstream to metastasize elsewhere in the body, we devoured a piece about an Israeli physicist who created a life-like model of a black hole in his lab that could shine light on the future of physics, and we marveled at a galaxy made almost entirely of dark matter. Read on, explorers!
