People · researcher

Jules Janssen

1824–1907 · Astronomy

Lifespan

1824–1907

Field

Astronomy

Known For

Saw an unexplained yellow line in the Sun's spectrum during the 1868 eclipse.

Nationality

French

Open on the People shelf — the interactive card, the filters, and everything alongside it.

From the Researchers database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.