Question: The Tyndall crater was named after John Tyndall, what was John Tyndall famous for?
Sentence (from "Pic Tyndall"): Pic Tyndall (from French: lit, "Tyndall Peak") is a minor summit below the Matterhorn (western shoulder) in the Pennine Alps, on the boundary between Aosta Valley (northern Italy) and Switzerland.
Relevant evidence: No