The Cerro Tololo Inter-American Observatory (CTIO) is an astronomical observatory located on the summit of Mt.

An exoplanet refers to a planet that orbits a star outside of our solar system.

A micrometre, also known as a micrometer, is a unit of length in the metric system.

The U.

Paris is the capital city of France and one of the most famous and influential cities in the world.

Spectroscopy is the study of the interaction between matter and electromagnetic radiation.

A telescope is an optical instrument designed to magnify and focus light for observation of distant objects.

The Wikipedia page on the United States provides a comprehensive overview of the country.