In a dramatic new discovery, scientists have identified over 15,000 kilometers of ancient riverbeds on Mars, revealing that ...

For decades, scientists have wondered why the moon’s two sides are so different. The side we see from Earth, known as the ...

Might sinuous ridges carved out across the ancient highlands of Mars hold the secret to a vanished age of rivers and rain on the Red Planet? Over 15,000 kilometers of such fluvial sinuous ridges, or ...