This image is just mind-blowing. It was originally captured in 1927 at the Solvay Conference, attended by some of the most brilliant scientists in history. Notable attendees included Albert Einstein, Niels Bohr, Marie Curie, Erwin Schrödinger, Werner Heisenberg, Wolfgang Pauli, Paul Dirac and Louis de Broglie. More than half of the attendees went onto win the Nobel Prize in either Physics or Chemistry. Marie Curie actually won the prize in both fields. She remains the only scientist in history to have done so.
The original picture is black & white but a Swedish female artist successfully colorized it and posted it on reddit where it became an instant classic. Not only that, she's made it available on the internet for free. The colorization is amazing and is the first time I've ever felt like I'm seeing these people for the first time.
This one definitely deserves to be shared further for the world to print and put up as a poster. A more epic gathering cannot be imagined.