Answer: The waves that travel through vacuum is electromagnetic waves.
Explanation:
There are two types of waves:
Mechanical waves: These are the waves that need a medium to travel so that they can transport their energy from one location to another. For Example: Sound waves
Electromagnetic waves: These are waves which can travel through vacuum. These have electrical and magnetic component associated with them. They travel with the speed of light. They does not require a medium to travel. For Example: Infrared waves, Microwaves
Hence, the waves that travel through vacuum is electromagnetic waves.
