Each day, as the Earth turns, the moon tugs upon the oceans of the world, causing the rise and fall of tides. As a result, the Earth's day gets a little bit longer, and the moon gets a little more ...
Where do Earth's oceans come from? The debate on whether water may have been originally delivered to our planet by comets striking its surface has reopened after a new groundbreaking study.
Illustration of the exoplanet Corot-7b, which may have lava oceans. Credit: ESO/L. Calçada. The Earth and Moon have been locked in a gravitational dance for billions of years. Each day ...