Astronomer

[Rihanna]

One who is versed in astronomy; one who has a knowledge
of the laws of the heavenly orbs, or the principles by which their
motions are regulated, with their various phenomena.

[Couch Potatoe]

[Someone] who does it [all night].

[Oralee]

An expert in or student of astronomy.

[Becky]

A [scientist] who studies [stars] and other objects [in the sky].

[Renato]

Astronomer is a data engineering platform built around Apache Airflow. A software product by Astronomer

[Mary Mallozziberg]

someone who studies astronomy