Venus is the brightest celestial body after the sun when viewed from Earth.

Every Sunday, we sing hymns at church.

The Southern Cross can often be seen in the southern hemisphere sky.

The North Star always points to the north.

Observing star clusters is a very important task for astronomers.

An open cluster is a cluster of stars that consists of dozens to thousands of stars.

This equation has homogeneity.

She made a homemade cake.

I have been to Shaanxi Province.

He deeply reflected on his actions.