Cometary explorer is a term used to describe a spacecraft that has been launched with the objective of studying comets. While this term is commonly used in the field of astronomy and space exploration, there are several other words and phrases that can be used to describe the same concept. For instance, cometary probe, comet hunter, and comet chaser are all synonyms that can be used interchangeably with cometary explorer. These terms often reflect the specific objective or scientific instrumentation of the spacecraft. Regardless of the term used, these vehicles play a crucial role in unlocking the mysteries of our solar system and the comets that inhabit it.