COSMOS: POSSIBLE WORLDS: A young Neanderthal girl kneels at the water's edge as host Neil deGrasse Tyson looks on. Until about 40,000 years ago, our Neanderthal relatives lived very much as we did in the "Coming of Age in the Anthropocene" episode of COSMOS: POSSIBLE WORLDS airing Tuesday, Dec. 15 (8:00-9:00 PM ET/PT) on FOX. CR: (Cosmos Studios)

COSMOS: POSSIBLE WORLDS: After the Greeks retreat, the Trojans spy a large wooden horse on the beach outside the walls of the city in the "Coming of Age in the Anthropocene" episode of COSMOS: POSSIBLE WORLDS airing Tuesday, Dec. 15 (8:00-9:00 PM ET/PT) on FOX. CR: (Cosmos Studios)

COSMOS: POSSIBLE WORLDS: A baby is born on the day the show premieres. What kind of world can she expect to grow up in? One of her possible futures is explored in the "Coming of Age in the Anthropocene" episode of COSMOS: POSSIBLE WORLDS airing Tuesday, Dec. 15 (8:00-9:00 PM ET/PT) on FOX. CR: (Cosmos Studios)

COSMOS: POSSIBLE WORLDS: On the Monterey Cliffs, host Neil deGrasse Tyson gently rocks a newborn baby in the "Coming of Age in the Anthropocene" episode of COSMOS: POSSIBLE WORLDS airing Tuesday, Dec. 15 (8:00-9:00 PM ET/PT) on FOX. CR: (Cosmos Studios)

COSMOS: POSSIBLE WORLDS: Cassandra is the smartest and most beautiful of the daughters of King Priam. Apollo falls in love with her, but she rejects him with devastating consequences for her and the city of Troy in the "Coming of Age in the Anthropocene" episode of COSMOS: POSSIBLE WORLDS airing Tuesday, Dec. 15 (8:00-9:00 PM ET/PT) on FOX. CR: (Cosmos Studios)

COSMOS: POSSIBLE WORLDS: Once brought inside the city walls, Greek invaders emerge from the Trojan horse under the cover of night in the "Coming of Age in the Anthropocene" episode of COSMOS: POSSIBLE WORLDS airing Tuesday, Dec. 15 (8:00-9:00 PM ET/PT) on FOX. CR: (Cosmos Studios)