Sirius is the brightest star in the night sky.

Please imagine the day when aliens come to Earth.

The circumpolar star is always visible in the north.

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.

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

He fell into the low ground.

He has only received a low-class education.

Pluto is classified as a dwarf planet.

This plant is affected by dwarfing.