Here's a breakdown:

* Electromagnetic radiation is a form of energy that travels in the form of waves. These waves are created by the vibration of electric and magnetic fields.

* Stars produce light and other forms of electromagnetic radiation through nuclear fusion reactions happening within their cores.

* This radiation travels outward from the star at the speed of light, which is approximately 299,792 kilometers per second (186,282 miles per second).

* The radiation travels through the vast emptiness of space without requiring a medium, unlike sound waves which need a medium to travel.

So, starlight travels through space as a form of energy known as electromagnetic radiation, traveling at the speed of light.