Extras

Video thumbnail: NOVA Three Tasks Driverless Cars Need to Learn

NOVA

Three Tasks Driverless Cars Need to Learn

There’s a lot going on ‘under the hood’ of a self-driving car.

Three Tasks Driverless Cars Need to Learn

Video thumbnail: NOVA Scientists Launch Rocket into the Moon to Find Water

NOVA

Scientists Launch Rocket into the Moon to Find Water

Researchers hope to observe lunar material ejected from an impact.

Scientists Launch Rocket into the Moon to Find Water

Video thumbnail: NOVA How Did the Moon Come to Be?

NOVA

How Did the Moon Come to Be?

Scientists have several theories for how Earth's Moon formed.

How Did the Moon Come to Be?

Video thumbnail: NOVA Back to the Moon Preview

NOVA

Back to the Moon Preview

Discover why scientists and entrepreneurs alike have their sights set on the Moon again.

Back to the Moon Preview

Video thumbnail: NOVA The Planets: Saturn Preview

NOVA

The Planets: Saturn Preview

NASA's Cassini reveals the mysteries of Saturn's rings—and new hope for life on a moon.

The Planets: Saturn Preview

Video thumbnail: NOVA The Planets: Mars Preview

NOVA

The Planets: Mars Preview

Before it was a dry planet, Mars was a wet world that may have hosted life.

The Planets: Mars Preview

Video thumbnail: NOVA The Planets: Jupiter Preview

NOVA

The Planets: Jupiter Preview

Jupiter's massive gravitational force has made it a wrecking ball and a protector of Earth

The Planets: Jupiter Preview

Video thumbnail: NOVA The Planets: Ice Worlds Preview

NOVA

The Planets: Ice Worlds Preview

Beyond icy worlds of Uranus and Neptune, Pluto dazzles with its mysterious ocean.

The Planets: Ice Worlds Preview

Video thumbnail: NOVA Mars, the Red Planet, Was Once Blue

NOVA

Mars, the Red Planet, Was Once Blue

Mars once had rains, rivers, and in the northern hemisphere, a vast sea.

Mars, the Red Planet, Was Once Blue

Video thumbnail: NOVA Jupiter, the First Planet to Form in our Solar System

NOVA

Jupiter, the First Planet to Form in our Solar System

Jupiter formed long before most other planets around it did.

Jupiter, the First Planet to Form in our Solar System

Video thumbnail: NOVA How Voyager discovered that Neptune is oddly warm and stormy

NOVA

How Voyager discovered that Neptune is oddly warm and stormy

Neptune has swirling clouds and strong winds. Can scientists figure out why?

How Voyager discovered that Neptune is oddly warm and stormy

Video thumbnail: NOVA Five Facts About the Tilted Planet

NOVA

Five Facts About the Tilted Planet

Uranus is more than just the tilted planet in our solar system.

Five Facts About the Tilted Planet

Video thumbnail: NOVA Five Facts About the Ringed Gas Giant Planet

NOVA

Five Facts About the Ringed Gas Giant Planet

Learn more about Saturn, its rings, and moons.

Five Facts About the Ringed Gas Giant Planet

Video thumbnail: NOVA Five Facts About the Red Planet

NOVA

Five Facts About the Red Planet

Getting to know our red celestial neighbor.

Five Facts About the Red Planet

Video thumbnail: NOVA Five Facts About the Largest Kuiper Belt Object

NOVA

Five Facts About the Largest Kuiper Belt Object

Learn more about Pluto and its moon, Charon.

Five Facts About the Largest Kuiper Belt Object

Video thumbnail: NOVA Five Facts About the Farthest Planet in our Solar System

NOVA

Five Facts About the Farthest Planet in our Solar System

Getting to know Neptune, the outer-most planet.

Five Facts About the Farthest Planet in our Solar System

Video thumbnail: NOVA Five Facts About the Biggest Planet in our Solar System

NOVA

Five Facts About the Biggest Planet in our Solar System

Jupiter is more than the biggest planet in our solar system—it's also the oldest.

Five Facts About the Biggest Planet in our Solar System

Video thumbnail: NOVA The Cassini Spacecraft's final moments

NOVA

The Cassini Spacecraft's final moments

Cassini plunges into Saturn, marking the end of its 13-year mission.

The Cassini Spacecraft's final moments

Video thumbnail: NOVA Why Did These Vikings' Bones Appear Older Than They Are?

NOVA

Why Did These Vikings' Bones Appear Older Than They Are?

Hint: Carbon in the ocean is different than carbon on land.

Why Did These Vikings' Bones Appear Older Than They Are?

Video thumbnail: NOVA Who Was This High-Status Viking Warrior?

NOVA

Who Was This High-Status Viking Warrior?

DNA evidence reveals surprising truth about the identity of a revered 9th-century Viking.

Who Was This High-Status Viking Warrior?

Video thumbnail: NOVA Lost Viking Army Preview

NOVA

Lost Viking Army Preview

Bioarchaeologists investigate a 9th-century mass grave thought to hold a lost Viking army.

Lost Viking Army Preview

Video thumbnail: NOVA Milking a Horse is Harder than You Think

NOVA

Milking a Horse is Harder than You Think

To milk a horse, one must trick a mother horse—and trick her well.

Milking a Horse is Harder than You Think

Video thumbnail: NOVA First Horse Warriors Preview

NOVA

First Horse Warriors Preview

The advent of horse riding changed the course of human history and our genetic makeup.

First Horse Warriors Preview

Video thumbnail: NOVA Why Fires Move Faster Up a Hill than Down

NOVA

Why Fires Move Faster Up a Hill than Down

U.S.D.A. scientists conduct an experiment to discover why fires move uphill.

Why Fires Move Faster Up a Hill than Down