The scientist most likely to study a meteor flying through outer space would be an astrophysicist.

Here's why:

* Astrophysicists specialize in the physics of celestial objects and phenomena. This includes the study of:

* The composition and structure of meteors: Astrophysicists use spectroscopy and other techniques to analyze the light emitted by meteors to determine their composition.

* The trajectory and motion of meteors: They use orbital mechanics to understand the path of meteors through space.

* The origin of meteors: They research the origins of meteoroids (the objects that become meteors) and how they become part of the solar system.

While other scientists might have a tangential interest in meteors, astrophysicists are the primary experts in studying them.