Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

As the most massive planet in the Solar System, and first to form, Jupiter’s gravity shaped the formation of everything else.

In the early days of our solar system, when the Sun was still young and the planets were barely formed, Jupiter wasn’t the ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to ...