The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by the gradual erosion power ...
New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...
The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by the gradual erosion power ...
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Scientists Warn an Asteroid the Size of a Football Field Could Strike Earth and Destroy an Entire CityThe massive space rock with the risk of hitting Earth's surface within the next seven years has kept scientists on their toes ...
YR4 was first discovered in December last year by a telescope in Chile. The near-Earth asteroid is as big as a football field ...
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