He is an expert in astrophysics.

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

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.

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

He placed the sculpture on the pedestal.

She was thinking with her hand on her forehead.

I plan to go to graduate school next year.

This is an important problem.

I finished my homework for today.