Satellite imagery provides a unique perspective on our planet and can encompass a wide ... Every week, we take a bird's eye view of Earth, and see how it affects the people living on it.

An international team of astronomers has reported the discovery of two exoplanets orbiting a nearby star known as HD 101581.

Photograph by Garcia Julien, Getty Images We also enjoy protection from Earth's magnetic field, generated by our planet's rotation and its iron-nickel core. This teardrop-shaped field shields ...