Gemini astronaut photos helped spur Earth observation program

NASA said in an announcement published Friday 13 November 2026 that astronaut photos from the Gemini program demonstrated the value of orbital imagery for studying Earth’s surface. The images helped scientists make the case for a dedicated Earth observation satellite program.

Astronauts James A. Lovell Jr. and Edwin E. Buzz Aldrin Jr. orbited Earth from November 11 to 15, 1966, on Gemini XII, the final mission of NASA’s Gemini program. They completed rendezvous maneuvers and spacewalks and helped spur the development of Earth observation from space.

Photos taken by Lovell, Aldrin, and other Gemini astronauts showed that orbital images could support the study of Earth’s surface. Their work provided evidence for developing satellites focused on observing Earth.

William T. Pecora, director of the United States Geological Survey from 1965 to 1971, was one of the strongest advocates for accelerating the use of Earth-observing satellites. In a 1969 statement, Pecora said the Earth Resources Observation Satellite program was conceived in 1966 largely because of the demonstrated utility of Mercury and Gemini orbital photography for Earth resource studies.

The Earth Resources Observation Satellite program, also known as EROS, later paved the way for Landsat. It was one of the early programs for observing Earth from space and helped establish the value of orbital imagery for resource studies.

For more than five decades, Landsat and other Earth-observing satellites have provided data used around the world to monitor crops, wildfires, flooding, vegetation health, land use, and other changes to the planet, NASA said.