Mountains were once my big adventure but is is over since a long time; I still dream from the wonderful days sometimes, read also a few pages from a mountain book. But the thought of doing again active mountain climbing has faded.

88. He also went on to consider nuclear goblins which he proposed as "a body of nuclear density.

He worked most of his life at the California Institute of Technology in the United States of America where he made many important contributions in theoretical and observational astronomy. Fritz Zwicky (February 14 1898 – February 8 1974) was a Swiss astronomer.