Since the formation of the Solar System, the orbits of the planets have evolved and changed over time.. While one of the most prominent ideas in the last few decades is planetary migrations and ...

Pluto was reclassified as a dwarf planet in 2006. Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be hidden far into the solar ...

A ninth planet the size of Neptune may be hidden in the far reaches of the solar system, but the evidence has left some experts skeptical.

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists — including hints about how the solar system formed.

What Pluto can teach us about planets and our solar system : Short Wave Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size ...

Between February 25 and February 28, all seven planets in our solar system will be visible in the night sky. It's known as a planetary parade. You'll need a telescope for some of them, but you ...

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

People around the world will have a chance this weekend to catch what could be the year’s most stunning view of the largest planet in our solar system. Jupiter on Saturday will shine at its ...