Sidereal is an adjective that means related to the stars.
The Latin word sidus (SEE doos) means star. This is the origin of our word of the day. If you’ve ever heard the term sidereal time, you know that this phrase refers to a measurement of time based on a motion of the fixed stars.
It was lovely to walk home in the sidereal glow of the evening. The light of the stars has always looked so beautiful to me.