Our solar system is a smashing success. A new study suggests that from its earliest period — even before the last of its nebular gas had been consumed — Earth’s solar system and its planets looked ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

Credit: ESA & NASA/Solar Orbiter/EUI team; Data processing: E. Kraaikamp (ROB) As tempting as it is to cite one, no single number can describe the temperature of the whole Sun. Its layers are at ...

Illustration comparing the planets of the Solar System and the Sun on the same scale. The planets are shown to scale relative to each other but their distances are not. From left to right the bodies ...