The article highlights the paradox of widespread belief in the abundance of life in the universe juxtaposed with humanity's singular known example on a planet facing rapid climate change. It ...

The Solar System might not be as quiet and orderly as we think. Imagine one day looking up and seeing something strange in the sky, a small speck that grows larger and larger. Soon, it becomes clear: ...

Stand on solid ground and it feels obvious that “down” points toward the center of the planet and “up” leads to the sky. Yet ...

When an asteroid strikes, there's typically at least one undeniable outcome: an asteroid mess. The most obvious part of this mess tends to come in the form of a nice and cinematic crater, but there's ...

Earth's core cannot be made just of iron — it also appears to contain carbon. And our research suggests it may contain a bit of oxygen and possibly silicon as well. When you purchase through links on ...

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.

You have probably seen the images of the surface of Mars, beamed back by NASA's rovers. What if there were a time machine ...