Why do airplanes have headlights?

Airplanes have several types of lights operating on them. They can be divided broadly into the ones that help during Navigation and the ones that help during landing/taxing. The "headlights" that you are referring to falls in the later type. read more

Aircraft often have two types of "headlights" for night operations: "taxi lights" help pilots see what's ahead and (somewhat) to the sides for moving to and from the runway, and "landing lights" help pilots see unlit things (such as animals or debris) on the runway during landing. read more

So today me and my fiance got into this incredibly ridiculous argument over whether or not airplanes have headlights. He says that they have forward facing lights to make sure they don't fly into other airplanes or mountains. read more