Biosignatures

Have Astronomers Found Life on Planet K2-18b?

October 23, 2023

A recent burst of blogs and media reports excitedly announced the discovery of molecules in the atmosphere of exoplanet K2-18b that could have been produced,...

Astronomy

by Hugh Ross Read

Are Oxygen and Ozone Signatures for Life?

September 17, 2018

Many people quickly identify oxygen and ozone as biologically produced molecules in Earth’s atmosphere. For that reason, exoplanet researchers look for oxygen and ozone...

Astronomy

by Hugh Ross Read

Ancient Muds Bog Down Evolutionary Explanation for Life’s Origin

November 30, 2016

When I was a kid, I played a lot of sandlot football. And nothing was more fun than playing football after a hard rain...

Origin of Life & Astrobiology

by Fazale “Fuz” Rana Read