The Planets — Season 1, episode 2 watch online

The Planets, season 1 episode 2 «Terra Firma»: air date May 6, 1999. Episode overview, season trailer and the cast of The Planets.

Although there is a volcano on Mars, and Venus has giant plains of frozen lava, for many years it seemed that the planets' surfaces were geologically dead. But at the end of the seventies, living volcanoes spitting boiling sulphur, ice and frozen nitrogen were found on the moons of Jupiter and Neptune.