Scientists have dated the birth of the solar system to about 4.57 billion years ago. About 60 million years later a "giant impact" collision between the infant Earth and a Mars-sized body called Theia ...

View larger. | Theia and Earth collided about 4.5 billion years ago, as depicted in this artist’s concept. The moon then formed out of the chaos. Image via Max Planck Institute for Solar System ...

Earth is a complex system, with myriad interactions and feedbacks among the atmosphere, hydrosphere, geosphere, cryosphere, and biosphere, as well as the people, institutions, and technologies that ...

In a white paper published by a multidisciplinary team of top scientists in China, Earth system is defined to encompass both internal and external geospheres from solid Earth system through surface ...