The first flight mission for planetary defense, NASA's Double Asteroid Redirection Test (DART) seeks to validate a method to ...

The NPS recommends avoiding hiking the Grand Canyon's inner trails between 10 a.m. and 4 p.m., when temperatures are at their ...

A hiker has died on the South Kaibab Trail in the Grand Canyon National Park while attempting to reach the Colorado River.

A 67-year-old Texas man died Tuesday at the Grand Canyon after abandoning an attempt to hike down to the Colorado River. He turned around and began ascending toward the rim before he was found, ...

A 67-year-old man from Texas died in the Grand Canyon during an extreme heat warning, rangers said. The man was found at ...

NASA astronaut Don Pettit has just shared a beautiful shot of the Grand Canyon captured from the space station during his recent stay there.

A dinosaur fossil has been found in an unlikely way in an unlikely place, a hole drilled under the parking lot of a Colorado ...

While Asteroid 2024 YRA has a minute chance of hitting Earth in seven years, the co-lead of NASA's DART mission says a small spacecraft could deflect the space rock's course.

Tucson is the epicenter of a meteorite hunt after a shower of space rocks landed north of the city Tuesday night.