The Planets

We once thought that volcanoes only shaped Earth's landscapes... We were wrong.

We once thought that Earth was the only world covered in water... We were wrong.

We once thought that Earth had the most powerful storms... We were wrong.

We once thought that just a few planets like Earth and Saturn had moons... We were wrong.

We once thought comets were rare... We were wrong.

The rocky planets Mercury, Venus, Earth, and Mars were born at the same time from the same material - yet have lived radically different lives. What immense forces are at play?

Professor Brian Cox continues his tour of the solar system revealing that it was once home to not one, but two blue planets.

Brian Cox continues his exploration of the solar system with a visit to a planet that dwarfs all the others: Jupiter. Its size gives it a great power that it has used to manipulate the other planets.

Professor Brian Cox reveals the history of Saturn. Saturn began life as a strange planet of rock and ice and in time transformed into a gas giant, ring-less and similar looking to its rival, Jupiter.

In the final episode, Professor Brian Cox journeys to the remotest part of the solar system, a place that the most mysterious planets call home.