Artist’s conception of a loosely tethered binary planetoid pair. Gemini Observatory/AURA, artwork by Joy Pollard. The Kuiper Belt is a cold, dark region of space that lies beyond the orbit of Neptune.

New research is challenging popular theory about how part of our solar system formed. Contrary to popular belief, new evidence suggests the planet Neptune can't have knocked a collection of planetoids ...

Astronomers made a surprising discovery inside the solar system's largest planet. New research suggests that Jupiter contains the remnants of numerous planetoids that it consumed as it grew in the ...

Planetary scientists at the California Institute of Technology have spotted an icy Kuiper Belt Object half the size of Pluto, raising the possibility that other large planetoids await discovery at the ...

Shows how the spectroscope, radio and optical telescopes are used to provide information about the origin of comets, meteors and planetoids. Special effects show the meteor shower of 1833, the ...