Arrokoth is a planetesimal in the Kuiper Belt, a vast stretch of space beyond Neptune that holds remnant building blocks of the solar system leftover from our cosmic neighborhood's formation.

The formation of the solar system is a challenging puzzle for modern astronomy and a terrific tale of extreme forces operating over immense timescales. Let's dig in.

Explore solar system dynamics, revealing the chaotic formation of planets and the unique paths that shaped our cosmic neighborhood.

A new theory of the solar system's formation provides an alternative to the idea our system formed from a supernova.

Using a limited set of mathematical equations, a mathematical sciences professor said he has confirmed a 224-year-old math conjecture about the origins of our solar system, providing insights about ...

Since astronomers discovered the first planets outside our solar system a few decades ago, it’s been clear that other solar systems don’t look much like ours.

Multiple exploding stars may have seeded the solar system with material required to form planets.