Please imagine the day when aliens come to Earth.

The circumpolar star is always visible in the north.

He is doing special exercises to strengthen his flexor digitorum profundus.

Alpha Centauri, in the constellation of Centaurus, is the closest star to Earth.

He said, 'A nameless star comes out in the evening,' teaching me that achieving a goal is not easy.

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

Astrocytes are one of the important support cells in the brain.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.