When the DSCOVR mission was conceived in the late 1990s, one of the central ideas was to provide daily, natural-color views of the entire Earth so that everyday citizens could see it. Seventeen years later, we have that view.
Landsat 7, NASA's newest Earth-observing satellite, launched without a hitch on April 15, 1999, at 2:32 p.m. EST from Vandenberg Air Force Base, California.
When the Apollo 11 astronauts left the surface of the Moon on July 21, 1969, they brought home samples of solar wind particles, lunar rocks and dirt, and a big helping of perspective.