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.

A sub-brown dwarf is a celestial body between a planet and a brown dwarf.

The average lifespan of a human is about 80 years.

As an astronomer, he is dedicated to the study of binary stars.

Looking up at the heavenly bodies, I feel calm.

The starspotted smooth-hound is a fish with a beautiful pattern like the night sky.

Finding an asterism is a great joy for astronomers.

Interstellar travel is still a realm of dreams for mankind.

Every year on July 7th is the day when the star Vega (Orihime) and Altair (Hikoboshi) meet.