He is an expert in planetary science.

A dwarf star is a star that is smaller and less bright than the sun.

The dwarf was digging for ore in the mountain.

This plant is affected by dwarfing.

A terrestrial planet may have an environment similar to Earth.

A Jovian planet is similar to Jupiter in terms of its size and composition.

A white dwarf is a celestial body that a giant star becomes at the end of its life.

A brown dwarf is a celestial body that has a size between a star and a planet.

Red dwarfs are the most common type of star in the universe.

It is believed that black dwarfs are formed by the cooling of white dwarfs.