When teachers explain ocean tides, they frequently describe how the moon's gravity pulls on Earth and all of its water. This, they often say, leads to a gravitational imbalance, which stretches ...

New evidence suggests the moon also harbors a hidden ocean. Evidence of a deep global ocean beneath the crust of Saturn's moon Mimas—sometimes called the "Death Star"—has surprised astronomers ...

With Europa and Enceladus getting most of the attention for their subsurface oceans and potential to host life, other frozen worlds have been left in the shadows—but the mysterious Jovian moon ...

An original drawing from "Explorers on the Moon", widely regarded as one of the two best Tintin adventures, sold for a record 1.55 million euros at a Paris auction on Saturday, auction house ...