I was friends with her for 10 years.

There is a secret between him and me.

He is writing a thesis on celestial mechanics.

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

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

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

Pluto is classified as a dwarf planet.

His dog has yellowish-brown fur.

I draw pictures using brown charcoal.

The brown pelican lives along the coastline.