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

We installed solar batteries on the roof of our house.

Solar wind affects the Earth's magnetic field.

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

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

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

This fluorescent pen is brightly colored and very noticeable.

I have fiber optic internet at my house.

Koukyou is my best friend.

Shoko is my best friend.