New observations show that newly formed planets close to a star help shepherd dust and gas to create more planets farther out ...

The young and distant object offers researchers a never-before-seek peek at the early stages of a planet's life.

The dwarf planet Makemake, which chills out in the deep freeze of the outer Solar System, might be home to an ice volcano 1. Makemake is one of many icy worlds that orbit the Sun past Neptune.

NASA's TESS satellite has discovered a Neptune-sized exoplanet closely orbiting its host star. It's just the fourth object of ...

In a few billion years, our Sun will die. It will first enter a red giant stage, swelling in size to perhaps the orbit of ...

Sure, we discovered Pluto and other dwarf planets beyond it ... The orientation of their orbits isn't as randomly distributed as we'd expect, which could be caused by the small gravitational ...

When observing very distant objects, such as dwarf planets located beyond Pluto, their orbits appear somewhat unexpected. They move in very large elliptical (oval-shaped) orbits and seem clustered ...