Ernst Haeckel · Albert Einstein Were Ernst Haeckel and Albert Einstein alive at the same time? Yes. Ernst Haeckel and Albert Einstein were alive at the same time for 40 years, from 1879 to 1919. Ernst Haeckel was 45 when Albert Einstein was born.Albert Einstein was 40 when Ernst Haeckel died, aged 85. Ernst HaeckelGerman zoologistBorn 16 February 1834 · died 9 August 1919, aged 85Albert EinsteinGerman-born theoretical physicistBorn 14 March 1879 · died 18 April 1955, aged 76 Abraham LincolnKarl MarxErnst HaeckelAlbert EinsteinAdolf HitlerRonald ReaganDonald TrumpVladimir Putin Ernst Haeckel and Albert Einstein in bold, with some of their best-known contemporaries. Drag across to see the age each reached in any year. Faded ends mark uncertain dates.