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 ...

You can tell spring has officially begun in the Northern Hemisphere just by looking at the stars. Here's how to easily spot ...

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

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

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

Astronomers say that of the thousands of stars visible to us in the northern hemisphere, Sirius is the brightest of them all.