From the scorching surface of Mercury to the icy edges of Neptune, our planetary neighborhood is full of wonders. The order ...

Planets in retrograde tend to get a bad reputation, and while it’s true that they can cause mishaps, they’re also important ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million years. Uranus and Neptune were next, within 10 million years.

On August 10, six planets —Mercury, Venus, Jupiter, Saturn, Uranus, and Neptune—will line up in an arc in the night sky. Four of these planets—Mercury, Venus, Jupiter, and Saturn—can be ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million years. Uranus and Neptune were next, within 10 million years.