Astronomers have announced the discovery of a new dwarf planet in our solar system, named 2017 OF201. Located far beyond ...

Spacecraft burn tons of fuel and leave behind debris—but a clever technique called aerobraking could fix both problems.

At the very edge of our solar system, beyond the grasp of Neptune and even past the icy sprawl of Pluto’s domain, a new ...

A distant, icy world has just been added to our solar system’s official roster, and its strange orbit might challenge one of ...