Extras

Video thumbnail: NOVA Ultima Thule is Surprisingly Flat

NOVA

Ultima Thule is Surprisingly Flat

This discovery could have a big effect on how scientists think about planet formation.

Ultima Thule is Surprisingly Flat

Video thumbnail: NOVA Pluto and Beyond Preview

NOVA

Pluto and Beyond Preview

The New Horizons spacecraft zooms toward an object 4 billion miles from Earth.

Pluto and Beyond Preview

Video thumbnail: NOVA Days Before Flyby, Ultima Thule Still Mysterious

NOVA

Days Before Flyby, Ultima Thule Still Mysterious

NASA's New Horizons spacecraft is about to visit the most distant object ever explored.

Days Before Flyby, Ultima Thule Still Mysterious

Video thumbnail: NOVA Ultima Thule Comes Into Focus as New Images Reveal Secrets

NOVA

Ultima Thule Comes Into Focus as New Images Reveal Secrets

NASA scientists received the most detailed images from its spacecraft, New Horizons.

Ultima Thule Comes Into Focus as New Images Reveal Secrets

Video thumbnail: NOVA New Horizons Makes Historic Flyby on New Year's Day

NOVA

New Horizons Makes Historic Flyby on New Year's Day

The New Horizons spacecraft made history by conducting the farthest ever flyby.

New Horizons Makes Historic Flyby on New Year's Day