Conventional images of the Earth and the moon place them close together, the moon hovering, seemingly, right over our planet's shoulder. Of course, this isn't accurate; we know just from looking 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 ...

Sean Raymond, an American astrophysicist living in France who studies the formation and evolution of planetary systems, posts a series called ``Building the Ultimate Solar System'' on his blog ...