4.9K views · 248 reactions | For six decades, most SETI experiments have relied on picking up signals reaching Earth. However, such schemes have limitations that can be avoided by searching for artifacts: constructions or rearrangements of nature attributable to highly advanced intelligence. Join Senior Director Simon Steel and Senior Astronomer Seth Shostak, who will talk about the advantages of hunting for artifacts and what such searches might uncover. | SETI Institute | Facebook

2.4K views · 200 reactions | The NASA-funded Asteroid...