The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated mission of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsibility, and supporting scientific education and science outreach for the betterment of all humanity.

An astronomer is a scientist who studies celestial objects and processes, such as stars, planets, galaxies, and the universe as a whole.

Astronomy is a natural science that studies celestial objects, such as stars, planets, comets, and galaxies, as well as the phenomena and processes that occur in outer space.

Edwin Hubble was an American astronomer who played a crucial role in expanding our understanding of the universe.

Harvard University is a renowned private research university located in Cambridge, Massachusetts, United States.

Henry James was an American-British author, often regarded as one of the key figures in 19th-century literary realism.

The Inverse-square law is a mathematical principle that describes the relationship between the intensity of a physical quantity and the distance from its source.

A logarithm is a mathematical function that quantifies how many times a particular number, known as the base, must be multiplied by itself to obtain a given number.