Ancient Stellar Passage Influences Modern Comet Orbits

A recent study reveals that the close passage of the star HD 7977, occurring 2.5 million years ago, may have significantly influenced the orbits of long-period comets we observe today.

A recent study reveals that the close passage of the star HD 7977, occurring 2.5 million years ago, may have significantly influenced the orbits of long-period comets we observe today.