Life on our planet emerged quickly or, at least, it did so on a geological timescale. Fossils reveal that micro-life existed ...

Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

Scientists are using powerful telescopes to study exoplanet atmospheres for signs of life. New missions could soon reveal ...

How did life begin on Earth? While scientists have theories, they don't yet fully understand the precise chemical steps that led to biology, or when the first primitive life forms appeared.

We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp. One of ...

A giant impact on the early Earth could have brought the building blocks of RNA to our planet, which new research suggests ...

New research suggests that amino acids, the fundamental components of life, may have arrived on Earth carried by interstellar ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo ...

Early Earth may not have had the right ingredients for life — until a nearby Mars-size planet crashed into it, two new studies hint. When you purchase through links on our site, we may earn an ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. As many as 200 worlds beyond our solar system discovered by astronomers may be larger than ...

Imagine a planet much like Earth, except instead of green trees dotting its swaths of land, two species of flowers—black daisies and white daisies—are the dominant plant life. The flowers are ...

Billions of years ago, long before oxygen was readily available, the notorious poison arsenic could have been the compound that breathed new life into our planet. In Chile's Atacama Desert, in a place ...