Comets streak across sky.
Meaning: Comets move quickly through the sky, leaving a trail behind them.
Choice of Words: Comets are celestial objects consisting of a nucleus of ice and dust and a long tail of gas and dust. Streak means to move quickly through the air, leaving a trail behind. Across means from one side to the other. Sky is the upper part of the atmosphere that we can see. This sentence is about the movement of comets in the sky.
Alternative Expressions
Related Expressions