Why is it dark at night?

It gets dark because Earth turns away. The Sun is on the other side. We see the Moon and stars. Lights help us see.

It is dark at night because our world slowly turns. In the daytime, your part faces the Sun, so light shines on you. At night, your part turns away from the Sun, so its light cannot reach you well. It is like turning your face away from a lamp. The room seems darker on that side.

Night happens because Earth spins, or turns, once each day. The Sun lights the half of Earth facing it. The other half is turned away, so that place is in Earth’s shadow and the sky looks dark. The Sun has not gone out; your part of the planet has simply turned away from it. Fun fact: Earth is always spinning, but it is so smooth and steady that we do not feel it.