Season 5 - Episode Guide

New discoveries reveal that everything we know about our moon could be wrong, and now, investigators race to understand the mysteries of its dark and violent past.

Tabby's Star, a mysterious star hundreds of light years away, might hold the hard evidence of extraterrestrial life, as experts speculate that its bizarre behavior points to proof of a massive alien-made megastructure.

New discoveries are changing everything we know about Saturn's rings, revealing that they're newer and more mysterious than we ever imagined and that someday soon they might disappear forever.

Cutting-edge technology developed at NASA reveals the hidden secrets and strange phenomena on the solar system's biggest planet, Jupiter.

New technology helps experts make startling discoveries about the origins of the universe's stars, revealing the secrets of how they transformed the cosmos. This is a mashup of "How the Universe Works", S01E04, "Extreme Stars" and "Space's Deepest Secrets", S01E08, "Quest for the First Star".

Experts are discovering new Earth-like planets all over our universe, and using the latest science, they investigate the secrets of these strange worlds that could be homes for extraterrestrial life. This is a mashup of "Space's Deepest Secrets", S03E04, "Search for Alien Earths" and S04E04, "Journey to Alien Earths".