Passing stars could trigger instability across the solar system, resulting in Earth being hauled out of its orbit.

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. Are planets in the solar system that are closer ...

Recently, scientists have made an exciting discovery: 11 Earth-like planets located just outside our solar system. These celestial bodies, which share many characteristics with Earth, are sparking ...

Cheng discovered the object as part of an ongoing research project to identify TNOs and possible new planets in the outer solar system.

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A ...

This process, , is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky ...

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being.

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Are planets in the solar system that are closer to the Sun older than the ones ...

– Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago.

The curious minds at What If explore what it would mean for life on Earth if every planet in our solar system were habitable.

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, researchers say.