Primordial soup

Look: Primitive cells could help confirm Mars once hosted life

by Jennifer Walter
Updated: 
Originally Published: 

Shutterstock

Life on Earth is made up of cells.

But there was a time, billions of years ago, where these complex molecular structures didn’t yet exist.

Some scientists hypothesize that more primitive protocells came before the cells we know today.

Made of lipids, these spherical clusters would have had a much simpler composition.

Shutterstock
Tap