To Scale: The Solar System • 2015

Category: Astronomy

On a dry lakebed in Nevada, a group of friends build the first scale model of the solar system with complete planetary orbits: a true illustration of our place in the universe.

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Place in Space and Time

Brian reveals how - as our exploration of the cosmos has deepened - we have even been able to piece together how the universe itself began.

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Extraterrestrial Life

Extraterrestrial life = Science Fiction. Not so fast! -- the Cassini probe has provided photos of Enceladus, where scientists have found geysers of water vapor. And then there is Gliese 581g, a planet with Earth-like conditions....what would life forms look like in these watery environments?

5Cosmic Front • 2014 • Astronomy

Destination: Pluto Beyond the Flyby

Join the New Horizons team to examine the latest findings and imagery from Pluto and the fringes of our solar system. They reveal a world unlike any other we've seen yet!

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The First Oceans

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.

S4E7How the Universe Works • 2015 • Astronomy


Are moons the most likely place to find life beyond the Earth? Explore the 300 that lie within our solar system which might give an idea of the Earth's turbulent past.

S1E6How the Universe Works • 2010 • Astronomy


What if you could get behind the wheel and race through space? We scale down the Solar System to the continental United States and place the planets along the way to better appreciate the immense scale of the Universe. See space as never before, with Mars looming over the Freedom Tower and Jupiter towering above the Lincoln Memorial. Join former astronaut Chris Hadfield - a YouTube sensation for his performance of David Bowie’s “Space Oddity” aboard the International Space Station - and his interstellar hitchhikers Michio Kaku and astronomers Derrick Pitts and Laura Danly. It’s a joyride from coast to coast - and from the sun to Pluto.

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