In this installment of "Our Cosmic Neighborhood," Harvard astronomer Avi Loeb takes a look at an ancient philosophical dialogue in the context of interstellar artificial intelligence.
Like prehistoric cave paintings, finding interstellar extraterrestrial devices might indicate that the quest for immortality is universal to all sentient beings past and present throughout the Milky Way galaxy.
Future interstellar travel could reveal that the "State of the Universe" is far more significant than our present concerns over worldly political matters at home.
Interstellar travel would require major investments. Instead, first we should examine the objects that arrive in our solar system from interstellar space.
This week, we look at two of the most iconic spacecraft ever to leave Earth and go into space in search of the unknown, and what NASA has said about the final phase of their historic mission.