Physicists: Ancient life might have escaped Earth and journeyed to alien stars0
- From Around the Web, Space
- January 29, 2020
A pair of researchers presented a wild new theory in a new paper.
A pair of researchers presented a wild new theory in a new paper.
Biological activity is a major factor in Earth’s chemical cycles, including facilitating CO2 sequestration and providing climate feedbacks. Thus a key question in Earth’s evolution is when did life arise and impact hydrosphere–atmosphere–lithosphere chemical cycles?
Want to find some ancient fossils? Scratch yourself. Many of the genes in our cells evolved billions of years ago and a few of them can be traced back to the last common ancestor of all life.