Ryan Crow of the U.S. Geological Survey (USGS) gave a talk to a packed crowd at the Museum of Northern Arizona Jan. 12 ...

Last time we learned about Mars' great Valles Marineris, the largest canyon in the solar system. But what about here on Earth, is the Grand Canyon really the biggest?

See the 2,500 mile-long (4000 km) Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: ...

The first full moon of 2025, dubbed the Wolf Moon, will make its debut draped in hues of orange as it passes in front of Mars in a game of peekaboo — a rare celestial event for skywatchers ...

“Mars today has a very thin atmosphere ... which produced notable geologic wonders such as the Grand Canyon. “It’s a really complex interplay of different factors that have different time scales,” ...

Mars' own Grand Canyon, Valles Marineris. Discovering life on Mars, past or present, would suggest that life could be common in the cosmos, while confirming Mars never supported life could imply life ...

Such a sentiment explains the appeal of the Grand Canyon Railway, a heritage train that takes people from a historic depot in the Route 66 city of Williams, Arizona, to the Grand Canyon's South Rim.

“Leave it as it is,” declared U.S. President Teddy Roosevelt after a 1903 sojourn at the Grand Canyon. “You cannot improve on it. The ages have been at work on it, and man can only mar it.” ...

From arachnid-like formations and mysterious blobs to an underground ocean and a giant volcano, here are our 10 favorite things scientists discovered on Mars this year.

Elon Musk proposes renaming Mars as 'New World' and emphasizes the importance of establishing a self-sustaining human settlement on the planet for humanity's long-term survival. Earlier this month ...

Guard Erik Kubel drained six 3-pointers and finished with a game-high 31 points to help lead Canyon of Canyon Country past Los Altos, 94-80, to win the tournament championship. Canyon’s Chigozie ...

Only one more half stands between Grand Canyon and the win they were favored to collect coming into this evening. After one quarter their offense has really been able to impose its will ...