The waves that travel from the Sun to Earth are primarily electromagnetic radiation. This radiation encompasses a wide spectrum of wavelengths, including:

* Visible light: This is the portion of the spectrum that our eyes can see, ranging from red to violet.

* Infrared radiation: This is heat radiation that we feel as warmth.

* Ultraviolet radiation: This is higher-energy radiation that can cause sunburn and skin damage.

* X-rays: These are even higher-energy radiation that can penetrate tissues.

* Gamma rays: These are the most energetic form of electromagnetic radiation.

While these are the most prominent, the Sun also emits other types of radiation, such as:

* Solar wind: A stream of charged particles (mostly protons and electrons) that constantly flows outward from the Sun.

* Neutrinos: Subatomic particles that interact very weakly with matter and therefore can travel through the Sun and Earth with little hindrance.

So, while we often think of sunlight as just visible light, it's actually a complex cocktail of different types of radiation.