Stephen Hawking's Favorite Places 3 • 2018

44:00

In just half a century, the human population has doubled to 7.4 billion, and during that time, astronaut and satellite photos have been capturing the startling changes on our planet. See how humans have made their mark reshaping the planet in our quest for new sources of food, power, and shelter. From glimmering new megacities like Shenzhen, China to areas affected by climate change like Mt. Kilimanjaro and Florida, witness Earth's changing look--the spectacular and the shocking--from 250 miles up.

2017 • Astronomy

22:31

Fifteen international agencies spend $62 billion every year on space travel. What's fueling our costly - and dangerous - drive to explore the universe?

S1E2 • History 101 • 2020 • Astronomy

43:00

For years, scientists suspected that the oceans came from molecules delivered to Earth from distant stars by asteroids, but a new discovery suggests that their true origins may be more exotic.

S4E7 • How the Universe Works • 2015 • Astronomy

42:28

For twenty years, NASA's Cassini spacecraft revealed the strange secrets of Saturn until it vaporized in its atmosphere in a blaze of glory. But today its legacy lives on, as fresh data from the probe helps scientists make brand-new discoveries.

S7E10 • How the Universe Works • 2019 • Astronomy

56:23

Journey of the Universe is a dramatic and expansive film that reimagines the universe story and reframes the human connection to the cosmos. Created by a renowned team of scientists, scholars, and filmmakers, it is beautifully filmed in HD on the Greek island of Samos, the birthplace of Pythagoras.

2012 • Astronomy

42:01

Asteroids strike, planets collide, black holes blast out death rays, volcanoes erupt and ice engulfs the planet. These are the universe’s weapons of extinction. They’ve happened before - wiping out entire species, and they will happen again. Are we next?

S3E6 • How the Universe Works • 2014 • Astronomy