Who is the greatest astronomer of all time?

The Most Influential Astronomers in History

The following figures are often regarded as the greatest astronomers of all time:

1. Galileo Galilei (1564-1642)
2. Johannes Kepler (1571 – 1630)
3. William Herschel (1738 – 1822)
4. Pierre-Simon Laplace (1749 – 1827)
5. Nicolaus Copernicus (1473 – 1543)
6. Claudius Ptolemy (2nd century AD)
7. Tycho Brahe (1546 – 1601)
8. Edmond Halley (1656 – 1742)