Search form

Donate Today
Now Playing:
The Planets: Inner Worlds
Next Episode:
Season 46
Episode 13
Mars was once a blue water-world studded with active volcanoes. But when its magnetic...
Previous Episode:
Season 46
Episode 11
Fifty years after humans first set foot on the Moon, new scientific discoveries are...

The Planets: Inner Worlds

Season: 46
Eps: 12

The rocky planets—Mercury, Venus, Earth and Mars—were born of similar material around the same time. Yet only one of them supports life. Were Earth's neighbors always so extreme? And is there somewhere else in the solar system life might flourish?

Add to favorites Favorite