For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

NASA's New Horizons found the solar wind slows as it nears interstellar space, helping improve models of the solar system's ...

On a clear night, it dominates the sky, bright enough to cast shadows and large enough for dark patches and surface features ...

Space looks empty until you try to cross it. Far beyond Pluto, where sunlight is faint and the planets are long behind, ...

Illustration comparing the planets of the Solar System and the Sun on the same scale. The planets are shown to scale relative to each other but their distances are not. From left to right the bodies ...

The size of the solar system is defined by the volume of space over which the sun's influence exceeds those of other nearby stars in the Milky Way galaxy. This influence derives from two fundamental ...

New forecasts are helping scientists pinpoint one of the most elusive locations in space: the outer boundary of the Sun’s ...