Complex sentence: Suess crater on the Moon and a crater on Mars are named after his son, Franz Eduard Suess (1867-1942), who was superintendent and geologist at the "Imperial Geological Institute" in Vienna.
Split into simpler sentences: Suess crater on the Moon and a crater on Mars are named after him. His son Franz Eduard Suess (1867-1942), was superintendent and geologist at the "Imperial Geological Institute" in Vienna.