Season 46
Beyond icy worlds of Uranus and Neptune, Pluto dazzles with its mysterious ocean.
The Planets: Ice Worlds
NASA's Cassini reveals the mysteries of Saturn's rings—and new hope for life on a moon.
The Planets: Saturn
Jupiter's massive gravitational force has made it a wrecking ball and a protector of Earth
The Planets: Jupiter
The rocky planets have similar origins, but only 1 supports life. Was it always this way?
The Planets: Inner Worlds
Discover why scientists and entrepreneurs alike have their sights set on the Moon again.
Back to the Moon
Bioarchaeologists investigate a 9th-century mass grave thought to hold a lost Viking army.
Lost Viking Army
The advent of horse riding changed the course of human history and our genetic makeup.
First Horse Warriors
Scientists investigate the deadly megafires that swept through California in 2018.
Inside the Megafire
Can a daring water engineering project revive the Dead Sea without altering its chemistry?
Saving the Dead Sea
New archeological evidence shows the stunning engineering of the Great Pyramid of Giza.
Decoding the Great Pyramid
Journey to Kīlauea volcano to investigate the eruptions that shook Hawaiʻi in 2018.
Kīlauea: Hawaiʻi on Fire
Join scientists as they grab light from across the universe to prove quantum entanglement.
