Hunt for Alien Technosignatures

In this episode, we move beyond the search for simple microbial life to the hunt for Technosignatures—measurable evidence of past or present advanced technology in the universe. While "Biosignatures" look for the chemical breath of life, Technosignatures look for the industrial heartbeat of a civilization. From planet-sized solar arrays to the chemical smog of alien factories, we are learning how to spot the footprints of intelligence across the light-years.Are we looking for a needle in a haystack, or is the galaxy a forest and we just haven't learned to recognize the trees? As our instruments grow more sensitive, we are moving from asking "if" they are there, to "where" they are hiding.