Understanding the Universe

58:40

Imagine a world where dinosaurs still walk the earth. A world where the Germans won World War II and you are president of the United States. Imagine a world where the laws of physics no longer apply and where infinite copies of you are playing out every storyline of your life. It sounds like a plot stolen straight from Hollywood, but far from it. This is the multiverse. Until very recently the whole idea of the multiverse was dismissed as a fantasy, but now this strangest of ideas is at the cutting edge of science. And for a growing number of scientists, the multiverse is the only way we will ever truly make sense of the world we are in. Horizon asks the question: Do multiple universes exist? And if so, which one are we actually in?

Horizon • 2015 • Astronomy

43:00

Scientists attempt to understand how this strange force of magnetism works.

S4E8 • How the Universe Works • 2015 • Astronomy

42:29

Supernovas are the violent death of giant stars, and new discoveries reveal that these cataclysmic events create the elements that are essential to all life in the universe.

S7E2 • How the Universe Works • 2019 • Astronomy

3:22

Carl Sagan talks about our place in the universe

9/10 • The Sagan Series • 1989 • Astronomy

59:09

All life on Earth needs water so the search for aliens in the solar system has followed the search for water. We examine the patterns in the ice on Jupiter's moon Europa, which reveal an ocean far below with more potentially life-giving water than all the oceans on Earth. But of all the wonders of the solar system forged by the laws of nature, Brian reveals the greatest wonder of them all.

S1E5 • Wonders of the Solar System • Astronomy

54:11

It’s a golden age for planet hunters: NASA's Kepler mission has identified more than 3,500 potential planets orbiting stars beyond our Sun. Some of them, like a planet called Kepler-22b, might even be able to harbor life. How did we come upon this distant planet? Combining startling animation with input from expert astrophysicists and astrobiologists, “Alien Planets Revealed” takes viewers on a journey along with the Kepler telescope. How does the telescope look for planets? How many of these planets are like our Earth? Will any of these planets be suitable for life as we know it? Bringing the creative power of veteran animators together with the latest discoveries in planet-hunting, “Alien Planets Revealed” shows the successes of the Kepler mission, taking us to planets beyond our solar system and providing a glimpse of creatures we might one day encounter.

Astronomy