The National Park Service opened a lottery for extended self-guided rafting trips along the Colorado River in Grand Canyon National Park this week, offering hundreds of spots for 2026.

This impact unleashed about 130 times the energy of the current global inventory of nuclear weapons. Read more at ...

Every plane crash is a tragic loss, but the aviation industry as a whole makes sure to improve after each one.

The issue of who rides what at the start of each WorldTour season is sometimes described as a sponsors' merry-go-round.

The back-and-forth is itself a telling new signal of what companies should expect under Trump, an Arizona business leader said.

Scientists proposed an explanation for the formation of Vallis Schrödinger and Vallis Planck near the lunar south pole, which ...

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

The lunar canyons Vallis Schrödinger and Vallis Planck are extraordinarily deep, and scientists now know the valleys were ...

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

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

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