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

Happy Statehood Day, Arizona. From Stevie Nicks and award-winning Mexican food to small towns and Camelback Mountain, here's ...

Two such lunar canyons, Vallis Schrödinger and Vallis Planck, stretch over 270 km (168 miles) each, with depths of 2.7 km ...

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

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

The United States has a proud history of preserving its natural beauty through national parks. Each year, millions of ...

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

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

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

From luxury heritage routes to routine service passing through extraordinary scenery, here are 19 of our favorite rail ...

Once devastated by earthquakes, New Zealand’s second-largest city is bursting with new restaurants, gleaming architecture and ...

The rocket-powered Gracie will conduct five hops during its short lunar stay, including one into the depths of a shadowy crater. A SpaceX launch later this month will send a new type of lunar ...