It was two years later when the event’s banner image, the “Blue Marble” photograph, was captured by the crew of the Apollo 17 spacecraft 28,000 miles from Earth on its way to the moon.

But while “Blue Marble” didn’t create an overnight revolution, it came to play an important role in the growing environmental movement. The first Earth Day had been celebrated on April 22, 1970.

The Blue Marble photo, though, has proven to be the crew’s best known legacy. NASA released the image on Saturday, December 23, 1972, and it made the front page of most newspapers over that long ...

A Blue Marble image captured in 2002 shows southeast Asia and Australia. ... Interesting background of this photo, but a bit of 2022 moralizing stands out as a little ridiculous.

Taken 50 years ago on Wednesday, the “Blue Marble” has become one of the world’s most widely reproduced photographs — and an icon of the environmental movement.

But while "Blue Marble" didn't create an overnight revolution, it came to play an important role in the growing environmental movement. The first Earth Day had been celebrated on April 22, 1970.