In 2008 there was a gamma ray burst, a violent cosmic explosion, 7.5 billion light years away, which is halfway across the visible universe, which could have been seen with a naked eye from the surface of the Earth. Anyone who saw it was looking billions of years into the past with their eyes.
In 1962, French explorer Michael Siffre spent two months in complete isolation…
In 1962, French explorer Michael Siffre spent two months in complete isolation buried in a cave below a glacier. His sense of time collapsed but his body continued to maintain a daily rhythm.