|Birth Day:||February 23, 1929|
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He was educated at the University of Tartu.
Born Jaan Eisenschmidt in Tartu, the name "Einasto" is an anagram of "Estonia" (it was chosen by his patriotic father in the 1930s to replace the family's German name). He attended the University of Tartu, where he received the Ph.D. equivalent in 1955 and a senior research doctorate in 1972. From 1952, he has worked as a scientist at the Tartu Observatory (1977–1998) Head of the Department of Cosmology; from 1992–1995, he was Professor of Cosmology at the University of Tartu. For a long time, he was Head of the Division of Astronomy and Physics of the Estonian Academy of Sciences in Tallinn. Einasto is a member of the Academia Europaea, the European Astronomical Society and the Royal Astronomical Society; he has received three Estonian National Science Awards.
In 1974, in a seminal work with Kaasik and Saar at the Tartu Observatory, Einasto argued that "it is necessary to adopt an alternative hypothesis: that the clusters of galaxies are stabilised by hidden matter." This was a key paper in recognizing that a hidden matter, i.e., dark matter, could explain observational anomalies in astronomy.
Since 1991 he is member of Academia Europaea. Since 1994 he is member of the Royal British Society of Astronomy.
The asteroid 11577 Einasto, discovered in 1994, is named in his honour.
Jaan was born and raised in Tartu, Estonia.
Currently, Jaan Einasto is 91 years old. Jaan Einasto will celebrate 92nd birthday on Tuesday, February 23, 2021. Below we countdown to Jaan Einasto upcoming birthday.