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Astronomy

The Stability and Dynamics of Binary Asteroid Systems

Quick fact

Nearly one in six asteroids larger than 200 meters in diameter is a binary system, and their orbits can be perturbed by solar radiation forces, affecting their long-term stability.

Why this is interesting

You've heard of binary stars, but did you know that some asteroids also have companions? This pair of space rocks orbiting each other holds secrets to the solar system's past—and its future.