Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

New research suggests that Jupiter wasn’t just a giant planet in its early years — it was a cosmic force that reshaped the entire solar system. Scientists at Rice University used advanced simulations ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

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 ...