weather, volcanic eruptions and even animal behavior. Every week, we take a bird's eye view of Earth, and see how it affects the people living on it.

Images from Gale Crater show wave-like ripples ... likelihood of intelligent life existing on other planets. A super-Earth, HD 20794 d, has been confirmed within a habitable zone 20 light years ...

Earth' planet named HD 20794 d, which could have conditions suitable for lifeThe planet has a mass six times greater than Earth's and orbits within the habitable zone of a star similar to the ...

As it orbits its star, it moves close enough at one point to experience extreme heat, similar to Venus’s temperature. But at its farthest point, the planet is nearly twice the distance from Earth to ...