The scientist most likely to study a meteor flying through outer space is an astronomer.

Here's why:

* Astronomy is the study of celestial objects and phenomena, including meteors.

* Astronomers use telescopes and other instruments to observe and analyze the movement, composition, and origins of celestial objects.

* They are also experts in understanding the physics of space and the processes that create meteors.

While other scientists like physicists, geochemists, and planetary scientists might also have an interest in meteors, astronomers are specifically trained to study these objects in their natural environment.