Learn about the 128 newly discovered moons of Saturn, believed to be the remnants of collisions that occurred early in the ...

A new study presents a compelling new model for the formation of super-Earths and mini-Neptunes -- planets that are 1 to 4 times the size of Earth and among the most common in our galaxy. Using ...

Small dust particles in the disk begin to collide and stick together, forming larger aggregates. This process, called accretion, results in the formation of planetesimals, solid bodies up to a few ...

These planetesimals continually ... Jan. 9, 2024 — Analysis of iron meteorites from the earliest years of the solar system indicate that the planetary 'seeds' that ultimately formed Earth contained ...