New research suggests that a binary pair of Kuiper Belt objects, known as the Altjira system, is actually made up of three separate bodies orbiting one another in a complex triad. This rare ...

Astronomers may have just identified a rare example of a "three-body problem" hiding in plain sight beyond the solar system's ...

Any eclipse is a fascinating event to observe and provides a glimpse of the celestial mechanics of the solar system ... meaning that the two celestial bodies appear to be around the same size ...

Scientists at NASA for the first time have been able to observe the make up of Pluto and other small and icy celestial bodies in the outer solar system. They had expected to find that the surfaces of ...