Rurika is my best friend.

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.

I was able to find the Big Dipper.

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

Please imagine the day when aliens come to Earth.

Sirius is the brightest star in the night sky.

The circumpolar star is always visible in the north.

The Orihime star is one of the brightest stars in the night sky.