I need a jingle about astronomy

If by "jingle" you mean a song, you can search on Youtube and type in "astronomy music" or the such.

If you need to make one yourself, you can choose a catchy beat online. Maybe it can be the instrumental of a catchy song you like (like Happy, Beethoven songs, anythting) and put in your own lyrics about astronomy.

For some inspiration on how to do this you can search up "The Elements of the Periodic Table" which is a really rememorable, catchy, and simple song to memorize. As proof, I have memorized at least 1/2 of it so far!

The jingle can be long or short, but sometimes shorter songs are easier to remember!

Good luck!