On the northwestern shore of Africa, some 150 miles south of the Canary Islands, the coastline slightly bulges in a pimple known as Cape Bojador. For Europeans in the early 15th century, Cape Bojador marked the boundary between the known and the unknown. North of the cape was civilization and the cities of light. South were the mystical lands of Africa and the Mare Tenebrosum, the “Sea of Darkness.
Some years ago, I had a colonoscopy without being fully anesthetized, and was able to watch on a computer screen the shifting views of the insides of my colon. I was both fascinated and disturbed. There, revealed in digital detail, was the deep interior of my body, a realm I had always considered a mysterious and forbidden temple, fragile and secretive as it went about its important business of keeping me alive.
Foul whisperings are abroad: unnatural deeds Do breed unnatural troubles … — MacbethSome years ago, the satellite radio and pharmaceutical entrepreneur Martine Rothblatt decided that she wanted a semblance of her wife to last forever.
Recently I met the astronomer Pascal Oesch, an assistant professor at the University of Geneva. Professor Oesch and his colleagues share the distinction of having discovered the most distant known object, a small galaxy called GNz-11. That galaxy is so far away that its light had to travel for 13 billion years to get from there to here. I asked Professor Oesch if he felt personally connected to this tiny smudge on his computer screen.