Deseret News archives: Grand Canyon became a national park in 1919
President Theodore Roosevelt made the area a game preserve in 1906 and created Grand Canyon National Monument in 1906, ...
来自MSN15 天
The moon has its own Grand Canyon that was created in just 10 minutes
and 3.5 km (2.2 miles), respectively — comparable to Earth’s Grand Canyon. Now, researchers have pieced together the violent cosmic event that formed them. The Schrödinger crater, located ...
CNN24 天
Two Grand Canyon-size valleys on the far side of the moon formed within 10 minutes ...
two massive canyons likely formed on the moon in a span of less than 10 minutes, according to new research. The extraordinary formations, each comparable in size to Earth’s Grand Canyon ...
NPR25 天
The moon's grand canyons were carved in the blink of an eye
The Grand Canyon in Arizona got carved by water over ... That's because these two canyons formed in the wake of an asteroid or comet smashing into the moon, a crash that sent streaks of rocky ...
Science News25 天
The moon’s two grand canyons formed in less than 10 minutes
The Grand Canyon, for example winds for a sinuous 446 kilometers and is only 1.9 kilometers ... The rim of the Schrödinger basin is about 125 kilometers from the anticipated landing site of NASA’s ...
Yahoo News24 天
10 Minutes of Violence Gave The Moon Its Very Own 'Grand Canyons'
The Moon has structures comparable to Earth's Grand Canyon; although, in the absence of liquid water, their formation mechanism has been difficult to determine. Now, scientists believe that they have ...