A 501(c)(3) organization is a type of non-profit organization in the United States that is exempt from federal income tax.

The Extremely Large Telescope (ELT) is a state-of-the-art astronomical observatory currently under construction by the European Southern Observatory (ESO).

Gravity is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another.

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

The Hubble Space Telescope is a space-based observatory that has revolutionized the field of astronomy since its launch in 1990.

The James Webb Space Telescope (JWST) is a large, space-based observatory set to launch in late 2021.

Las Campanas Observatory (LCO) is an astronomical observatory owned and operated by the Carnegie Institution for Science (CIS).

The National Academy of Sciences (NAS) is a premier institution in the United States that advises the government on scientific matters.