On his first trip to the Grand Canyon Star Party, Dave Eicher joins thousands for a week of lectures, observing, and cosmic wonder.

Slot canyon hiking blends beauty, problem-solving and risk. “It’s not just walking,” says Lura Snow, deputy operations manager for Wildland Trekking in Utah.

This one-day itinerary includes the best of Grand Canyon's South Rim, including El Tovar, Mather Point, Bright Angel Trail and Desert View Watchtower.

A historic find has been discovered beneath the Grand Canyon that's hidden at the bottom and blazing. The uranium mine has pumped toxic water.

Less crowded and worth the drive: Grand Canyon North Rim's 2025 season opens May 15. Here are the best hikes, scenic drives and more things to do.

Grand Canyon vs. Utah Valley prediction, odds, time: 2025 WAC Tournament final picks from proven model SportsLine's model simulated Utah Valley Wolverines vs. Grand Canyon Antelopes in the 2025 ...

Width and depth of the Grand Canyon along the Bright Angel hiking trail from the south to the north rim compared with the width and depth of Vallis Planck, one of the grand canyons on the Moon.

The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.

Can you skydive continuously without landing? Watch skydiver Max Manow pull off a never-before-seen feat over the Grand Canyon, showcasing gravity-defying teamwork with an airplane pilot.

A tale of two canyons A comparison of the width and depth of the Grand Canyon along the Bright Angel hiking trail (top) and Vallis Planck on the moon’s south pole (bottom).

Width and depth of the Grand Canyon along the Bright Angel hiking trail from the south to the north rim compared with the width and depth of Vallis Planck, one of the grand canyons on the moon.

Vikos Gorge in Greece is known as the “Greek Grand Canyon”. Credit: Anas.Dimitris/Wikimedia Commons/CC-BY-SA-4.0 The Vikos Gorge, a wonder of the natural world in Greece, is known as the “Greek Grand ...