We usually think of our Solar System as a calm, well-organized family of planets, but a new study suggests its early days may ...

Jupiter, Saturn, Uranus and Neptune did not always have their current positions in the solar system. According to the ...

Our solar system may have hosted up to six giant planets in its first hundred million years, a new study suggests. The ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...

The ice giant, now missing, may have disrupted some of the moons of Uranus and Jupiter.

Which solar system model is best? For as long as humans could look up at the night sky, we’ve been fascinated with the stars. How far away are they? Where did they come from? What secrets do they hide ...