Far beyond Neptune, in the frozen depths of the Kuiper Belt, many ancient objects oddly resemble giant snowmen made of ice and rock. For years, scientists wondered how these delicate two-lobed shapes ...

Out in the Kuiper Belt, the massive doughnut of debris beyond Neptune, about one in 10 kilometer-scale objects have surprised ...

Microscopic crystals extracted from meteorites could help settle a debate about the birth of our patch of the Milky Way.

Deep within the Kuiper belt, some small worlds look like they were assembled from two mismatched snowballs pressed together.

Far from the Sun’s heat, orbiting the outer planets of the solar system, are moons with oceans of liquid water beneath their frozen surfaces. Keith Cooper finds out how planetary scientists are ...

Researchers have finally determined the shape of the heliosphere, the magnetic bubble that protects our Solar System from galactic radiation. Unlike previous models, this zone, generated by solar wind ...