Astronomy includes both the theory and observation of celestial objects in the sky. Studies may require physics courses and some programs may teach students how to use telescopes, star charts, and special computer software. A student interested in using creative thinking and problem-solving may enjoy studying this topic.

Chile, officially the Republic of Chile, is a South American country occupying a long, narrow strip of land between the Andes mountains to the east and the Pacific Ocean to the west.

The PhD is a doctoral degree, specifically called a "doctor of philosophy" degree. This is misleading because PhD holders are not necessarily philosophers (unless they earned their degree in philosophy!). That said, PhD recipients are able to engage in thought experiments, reason about problems, and solve problems in sophisticated ways.

On-campus learning refers to attending classes in person. It typically involves going to traditional classes and lectures, participating in group activities, and engaging with faculty and peers in person. On-campus learning also often includes access to laboratories, libraries, and other campus resources such as student clubs, career services offices, and recreation centers.