Happy Statehood Day, Arizona. From Stevie Nicks and the Colorado River to creosote and Camelback Mountain, here's why we love the Grand Canyon State.

YR4 is circling Earth and NASA predicts it could strike the planet in 2032. Here's what to know about the asteroid headed ...

Homolovi State Park was ranked among top road trip destinations in Arizona, and for good reason. Here's why you should make the trip and what to see.

About 35 million years ago, an asteroid struck the ocean off the East Coast of North America, leaving behind a massive impact ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

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 ...

Scientists say Vallis Schrödinger and Vallis Planck—dramatic trenches near the lunar south pole—were carved in a blast that ...

RIVERSIDE, Calif. — Tylen Riley's 25 points helped Cal Baptist defeat Grand Canyon 85-71 on Saturday night. Riley shot 5 of 9 from the field, including 2 for 4 from 3-point range, and went 13 for 16 ...

This week, explore decoded words from charred ancient scrolls, meet heroic frog daddies, see Grand Canyon-size lunar features ...

Our Moon continues to surprise us with amazing features. Scientists recently shared new information about two canyons that ...