Rivers began pumping weathered material into the sea about a billion years after Earth formed, suggesting continents may have gotten an early start.

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

Now, a new study finds evidence of this flood in ridges along the Sicily Sill and in channels that likely formed from this sudden and powerful deluge. Ages, epochs, periods, and even eras are often ...