New research suggests that a binary pair of Kuiper Belt objects, known as the Altjira system, is actually made up of three ...

It's a new type of three-body problem for astronomers, who used the Hubble Space Telescope to determine that twin asteroids ...

Altjira is entering an eclipse period during which the outer body will pass in front of the ... a space between the inner objects of a proposed triple system 3.7 billion miles away would only ...

A newly identified Kuiper Belt trio, possibly only the second of its kind, could provide strong evidence that these distant ...