.Banner: Earth Timeline Activity and Watery Worlds
When in Earth's history did life develop?
How long did it take for complex life to
What can these answers tell us about the
type of life we might find on other
Guess when various kinds of organisms first developed in the history of Earth. Then reveal actual timeline of life. The early development of simple life and the relatively late
development of complex life changes many people's ideas of what alien
life may look like.
The back of this banner has an overview of the watery worlds of our Solar System. Or download that separately below.