Early Earth

Newly discovered lunar ridges have provided the first evidence of recent geological activity on the far side of the moon. The post Is the moon geologically dead? Maybe not, says new evidence first appeared on EarthSky.

In a study published in the journal Nature Geoscience, planetary researchers used high-resolution images and compositional data captured by orbiters to understand the geology of thousands of kilometer-scale mounds in the lowlands north and west of Mawrth Vallis.

Ancient evidence suggests a new twist in how we all got here.

A new study suggests that cloud-to-ground lightning likely provided the necessary material for the first organisms on Earth to form.

Our Earth is around 4.5 billion years old. Way back in its earliest years, vast oceans dominated. There were frequent volcanic eruptions and, because there was no free oxygen in the atmosphere, there was no ozone layer. It was a dynamic and evolving planet.

An impact with a protoplanet called Theia 4.5 billion years ago seems to have left remnants deep inside Earth

Cratons are pieces of ancient continents that formed several billions of years ago. Their study provides a window as to how processes within and on the surface of Earth operated in the past. Cratons preserve relics of our young Earth as they host a variety of rock assemblages such as greenstones and granites. Greenstones are rock assemblages that are primarily composed of sub-marine volcanic rocks with minor…

Nobody knows how life got started here, but we're one step closer to learning how its vital components formed.

Researchers discovered a new set of chemical reactions that use cyanide, ammonia, and carbon dioxide generates amino acids and nucleic acids, the building blocks of proteins and DNA.

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Checking in on Percy, one year in

Learn more about the water molecules on the moon, which may trace their origins to the materials that made Earth and comets.

They call it a "boxwork" region.

Wherever astronomers look, they see life's raw materials.

The earliest cells likely didn't have membranes to separate and protect their components and chemistry away from a harsh surrounding environment. But they may have made do with rain.

How did early cells keep themselves distinct while allowing for some amount of exchange?

A special group of molecules, known as peptides, can form more easily under the conditions of space than those found on Earth.

The origin of life on Earth is still enigmatic, but we are slowly unraveling the steps involved and the necessary ingredients. Scientists believe life arose in a primordial soup of organic chemicals and biomolecules on the early Earth, eventually leading to actual organisms.

In deep space, Earth-like worlds could be purple.

Researchers at the University of California San Diego have identified the conditions for cell metabolism to emerge on the early Earth, shedding new light on the origins of life itself, along with the fundamental nature of biological carbon fixation.