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

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

The puzzle of predicting how three gravitationally bound bodies move in space has challenged mathematicians for centuries, and has most recently been popularized in the novel and television show "3 ...

After 17 years of observation, researchers are certain that what they thought was a group of two celestial bodies is actually ...

Scientists have discovered a potential three-body system in the Kuiper Belt, the Altjira system, challenging planet-formation theories.

The largest KBO is dwarf planet Pluto ... building up that evidence takes time and repeated observations. The only Kuiper Belt objects that have been explored in detail are Pluto and the smaller ...

Astronomers have discovered what they believed to be a rare stable trio of gravitationally bound Kuiper Belt objects, ...