Final answer:
The subject of this question is Physics. Mr. Puncto's new job involves measuring the distances of various worlds and charting the space using telescopes, spectra, and making maps and surveys.
Step-by-step explanation:
The subject of this question is Physics. Mr. Puncto's new job involves measuring the distances of various worlds and charting the space. This requires using telescopes and taking spectra to determine galaxy distances. In addition, it involves making maps and surveys to display the collected data.