Moon is not as 'geologically dead' as previously thought, new study reveals

Scientists have studied the moon's surface for decades to help piece together its complex geological and evolutionary history. Evidence from the lunar maria (dark, flat areas on the moon filled with solidified lava) suggested that the moon experienced significant compression in its distant past. Researchers suspected that large, arching ridges on the moon's near side were formed by contractions that occurred billions of years ago—concluding that the moon's maria has remained dormant ever since.