Photo Credit: Carol Kantor/ Amateur Observers Society of NY

This engaging banner encourages your visitors to guess when various kinds of organisms first developed during Earth's history; you can then reveal the correct timeline* wth a simple flip! Topics explored include:

• When in Earth's history did life develop?
• How long did it take for complex life to develop?
• What can these answers tell us about the type of life we might find on other planets?

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, which you can also download it separately below.

*Please note that there is still much debate about the exact timing of the development of the first life on Earth and this banner is by no means meants a definitive guide, but as a quick introduction to further investigation.

Uploaded: June 15, 2011