A certain Turkish potter went to sleep in Istanbul and woke up in Copenhagen.
Wives and relatives were sorely vexed.
|Photo by Isabelle Wenzel|
The Danish astronomer I had in mind as I wrote "A certain Danish astronomer" is, obviously, Ejnar Hertzsprung. He came up with a classification system for stars that we still use today -- dividing them by spectral type, developmental stage and luminosity.
To the best of my knowledge, Hertzsprung never teleported anywhere, let alone trade places with a Turkish potter.
Ejnar Hertzsprung was born in 1873. Istanbul still thrived under the Ottomans, but the empire itself would fall in a few decades.