Geology

The moon is still geologically active, study suggests

The moon is still geologically active, study suggests

We tend to think of the moon as the archetypal “dead” world. Not only is there no life, almost all its volcanic activity died out billions of years ago. Even the youngest lunar lava is old enough to have become scarred by numerous impact craters that have been collected over the aeons as cosmic debris crashed into the ground.

What a tiny micrometeorite from the Pilbara can tell us about the ancient sky

What a tiny micrometeorite from the Pilbara can tell us about the ancient sky

Not long ago, my colleagues and I found some micrometeorites in the Pilbara region in Western Australia. What’s truly remarkable about them is that these tiny meteorites can tell us a great deal about the chemistry of Earth’s atmosphere 2.7 billion years ago.