He was taking the train home to Iringa, in southern Tanzania, I later learned, after a long stint doing engine work for the Tazara in Dar.

The images reveal blurry dots, "just a handful of pixels," says Garth Illingworth, a University of California, Santa Cruz, astrophysicist.

Astrophysicists Professor Gat Illinvote of University of California also pointed out that: "We are very surprised, the existence of such bright galaxies, even in the early universe."