A new study suggests that a massive structure beyond Jupiter trapped the cosmic dust needed to form the first building blocks ...

The early solar system may have been far more chaotic than we ever imagined. A new study published in Icarus suggests that our solar system might have once hosted an additional giant planet, whose ...

The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming ...

The ingredients that help make a planet livable did not necessarily come from where many scientists once thought. A new ...