The Old Caves Crater Trail is one of the best hikes in Arizona for exploring caves built by the region's earliest inhabitants ...

Arizona is an ideal spot to see the Milky Way thanks to its numerous dark-sky places. Here's the best time to see - and ...

Lowell Observatory Historian Kevin Schindler runs a detective story at the Grand Canyon to recreate a famous photo of Neil ...

A massive meteor crater in northern Arizona continues to attract visitors and spark curiosity about space and science, ...

Earth in what is now known as Northern Arizona. It left a giant crater that draws people from all over the world. Nestled ...

Asteroid Day reminds us of space rocks' power. Some asteroids hit Earth hard. One exploded over Chelyabinsk in 2013, injuring ...

Meteor Crater and Lowell Observatory invite the public to observe the unique benchmark with a day of educational activities.

Arizona Sen. Mark Kelly knows a few things about objects in outer space, including those that make their way to Earth.