- David Fabricius (1564-1617)
- Born in Germany.
- He discovered the first variable star – Mira, in the constellation of Cetus.
- Born in Germany.
- He discovered the Sun’s spots and its revolution.
- Born in England.
- He worked on a star catalogue which was completed by others, the editor being Edmond Halley.
- Born in Germany.
- He made the best refracting lenses of his day.
- He conducted studies in spectoscopy.
- The dark lines that he found in the band of light that has passed through a prism are named after him.
Johannes Fabricius (1587-1615)
John Flamsteed (1646-1719)
Joseph Fraunhafer (1787-1826)