New research improves understanding of ancient landscapes

Geologists use zircon mineral grains to reconstruct what the Earth and its landscapes looked like in ancient times. These microscopic grains, commonly the width of a human hair, record detailed information on when and where ...

Why doesn't Venus have a magnetosphere?

For many reasons, Venus is sometimes referred to as "Earth's twin" (or "sister planet," depending on who you ask). Like Earth, it is terrestrial (i.e. rocky) in nature, composed of silicate minerals and metals that are differentiated ...

Are plate tectonics key to life? Maybe not, say scientists

Earlier this year, researchers announced they had found fossils of microbial life in the rocks of northern Quebec, Canada dating to at least 3.77 billion years old, making them the oldest known life form on Earth. It was ...

New NASA study suggests moon once had an atmosphere

A new study shows that an atmosphere was produced around the ancient Moon, 3 to 4 billion years ago, when intense volcanic eruptions spewed gases above the surface faster than they could escape to space. The study, supported ...

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