After that, they compare it to the Earth’s geoid model to find the vertical position of a point. The lowest point in the US ...

Previous observations suggested that Ceres was less than 30% ice, and its craters were thought to imply that the dwarf planet ...

“This study presents the first physical evidence that Snowball Earth reached the heart of continents at the equator,” said Liam Courtney-Davies, lead author of the new study and a postdoctoral ...

Even from space, you wouldn’t detect something important about Earth’s shape: It’s not perfectly round. It’s actually a slightly oblate spheroid, or an ellipsoid. This means it is a little bit wider ...