AROOSTOOK COUNTY, Maine (WAGM) - Aroostook County’s iconic Maine Solar System Model is about to get even bigger. Two new dwarf planet models are being added to the roadside attraction that has ...

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there is a distant Planet Nine out there.

Mysterious spherical droplets in meteorites aren’t just cosmic oddities. They’re evidence of planetary formation.

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of ...