Here's the breakdown:

Ionizing Radiation:

* Ultraviolet (UV) radiation: This is the part of sunlight that causes sunburns and can contribute to skin cancer. UV radiation has enough energy to knock electrons off atoms, creating ions.

* X-rays: While not directly emitted by the sun, the sun can cause the Earth's atmosphere to emit X-rays. X-rays are also ionizing radiation.

Non-ionizing Radiation:

* Visible light: This is the part of sunlight we can see. It doesn't have enough energy to ionize atoms.

* Infrared (IR) radiation: This is what we feel as heat. It's also non-ionizing.

The Bottom Line:

Sunlight contains both ionizing and non-ionizing radiation. While the non-ionizing parts of sunlight are generally safe, it's important to protect yourself from the damaging effects of UV radiation.