Two Grand Canyon-size valleys on the far side of the moon formed within 10 minutes, scientists say
Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...
Moon's two hidden canyons deeper than the Grand Canyon formed at bullet speed by lunar rocks
New research reveals that two massive lunar canyons, deeper than the Grand Canyon, were formed in under 10 minutes by intense ...