From space, the Earth looks like a sphere or a ball ... Flat, two-dimensional maps can look different because the world is actually curved. This means map-makers need to make compromises when ...

Because the world is a sphere, it is difficult to accurately project this on a two-dimensional map. When the world is flattened to fit on a piece of paper it is distorted. This makes some ...

NASA has launched a $488m infra-red mission to map the distribution of galaxies and study cosmic inflation. The ...