I. Ertov

Russian scientist

Scientist and astronomer from Britain

Soviet astronomer

Russian historican, teacher and writer

Mathematician, philosopher and astronomer

Slovak astronomist and university educator

Politician

Ukrainian historian

French botanist

Austrian astronomer and mathematician

Polish astronomer

German-born British astronomer and composer

Soviet astrophysicist

Estonian astronomer and astrophysicist

Russian astronomer

English astronomer; Astronomer Royal

Astronomer

French natural historian

Russian historian (1788-1848)

Soviet astronomer

German optical physicist

Austrian astrophysicist

British mathematician and theoretical astronomer

German astronomer

Greco-Egyptian writer of Alexandria

Italian astronomer and science historian

French astronomer

Swedish astronomer

Belarusian astronomer

pre-Socratic Greek philosopher

Russian astronomer (1874-1956)

Russian astronomer

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