Many March underdog darlings emerge from the same handful of leagues with a reputation for wreaking NCAA Tournament havoc.

From exploring Arizona canyons to Utah buttes and beyond, our national parks columnist shares the most adventurous Southwest ...

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.

Ever wonder what the deepest lake in Arizona is? Here's what you want to know about the top spot for swimming, boating and more in Arizona.

Scientists found that an asteroid impact carved two massive canyons on the moon in minutes. High-speed debris helped shape ...

A new study explains how two deep canyons formed very quickly on the moon during an asteroid impact. KNAU’s Melissa Sevigny ...

The measurements showed these two canyons were similar in width and length to the Grand Canyon. Vallis Schrödinger is 168 miles (270 kilometers) long and 1.7 miles (2.7 kilometers) deep, and Vallis ..

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object slammed into the moon 3.8 billion years ago.

Moon Grand Canyon carved out in less than 10 minutes by bullet-fast space rocks - Space rocks travelling as fast as a bullet carved out 2.6km trench in lunar surface ...

The measurements showed these two canyons were similar in width and length to the Grand Canyon. Vallis Schrödinger is 168 miles (270 kilometers) long and 1.7 miles (2.7 kilometers) deep ...