That photograph is a mere footnote to the sheer audacity of Apollo 8 - first crewed flight of the Saturn V. - first crewed spacecraft to leave Earth's orbit.

That photograph is a mere footnote to the sheer audacity of Apollo 8 - first crewed flight of the Saturn V. - first crewed spacecraft to leave Earth's orbit. - first crewed spacecraft to enter Lunar orbit. - first humans to see the far side of the moon. - most watched (at the time) live TV broadcast. Those guys had balls of steel, and I'll be pouring one out on the stoop for Bill Anders and the crew later today in memory.