The Artemis II crew captured this view of Earth setting behind the lunar horizon on April 6, 2026, as they completed their loop around the Moon — the first humans to travel that far from home in more than fifty years. From out there, the argument for Earth Day doesn’t need making. The planet makes it for itself.
Carl Sagan, who understood the view as well as anyone who never left the ground, put it with characteristic economy:
“There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet. Like it or not, for the moment the Earth is where we make our stand.”
Three point seven billion years of unbroken biological invention. One chance not to squander it.
Happy Earth Day - Ariadne