It only takes a little time to gather in the darkness of a clear night and marvel at the greatness of God. Get the whole family outside and make it enjoyable to name the planets, decide the phase of the moon, and locate the constellations. There are many helpful resources out there such as sky charts to locate stars and constellations, and websites and books with charts and information about our moon.
The Bible is an excellent tool as well. Try having a sort of sword drill; encourage kids to use their concordances and look for references in Scripture to the sun, moon, stars, planets, and other astronomy-related words. Need another resource? Read "The Heavens Declare" aloud, and enjoy the great family times and praise-filled learning about the planets in our solar system. Like the Edwards family ends chapter two, find a good song of praise, and worship the Lord under His starry creation!