The dwarf was digging for ore in the mountain.

A solar day is the time it takes for the Earth to orbit around the Sun.

He was reading a book about the ancient Egyptian sun god.

The ocean currents can change due to the effect of the solar tide.

We installed solar batteries on the roof of our house.

The Solar System is composed of eight planets, including Earth.

Solar wind affects the Earth's magnetic field.

He is the type of person who thinks it's a moonlit night if it's bright, so he only has a one-sided perspective.

The heliocentric theory is the idea that the sun, not the earth, is the center of the universe.

He was hit hard in the solar plexus during the boxing match.