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Country: Poland

About A. Wolszczan
Aleksander Wolszczan ( listen) (born April 29, 1946 in Szczecinek, Poland) is a Polish astronomer. He is the co-discoverer of the first extrasolar planets and pulsar planets.Wolszczan was educated in Poland (MSc in 1969 and received his PhD in 1975 at the Nicolaus Copernicus University in Toruń), He moved in 1982 to the U.S. to work at Cornell and Princeton University. Later he became an astronomy professor at Pennsylvania State University, where he currently teaches. From 1994 to 2008 he was also a professor at the Nicolaus Copernicus University in Toruń. He is a member of the Polish Academy of Sciences. Working with Dale Frail, Wolszczan carried out astronomical observations from the Arecibo Observatory in Puerto Rico which led them to the discovery of the pulsar PSR B1257+12 in 1990. They showed in 1992 that the pulsar is orbited by two planets. Their orbits are 0.36 and 0.47 AU respectively. This was the first confirmed discovery of planets outside the Solar System (several hundred are known today). In 1996, Wolszczan was awarded the Beatrice M. Tinsley Prize by the American Astronomical Society, and in 2002, he was pictured on a Polish postage stamp. In 2003 Maciej Konacki and Wolszczan determined the orbital inclinations of the two pulsar planets, showing that the actual masses are approximately 3.9 and 4.3 Earth masses.

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Poland Scientists & Academicians Ranking

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Rank Name Total
1. Marie Curie 19036
2. Mikołaj Kopernik 2697
3. Daniel Fahrenheit 414
4. A. Wolszczan 94
5. Jan Hevelius 76

Scientists & Academicians Ranking

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Rank Name Total
193. Oleg Antonov 99
194. Hassan Roshdieh 98
195. Bernardo Houssay 97
196. B. Frederic Skinner 96
197. A. Wolszczan 94
198. Rafig Aliyev 93
199. Ulugh Beg 92
200. Luis Leloir 87
201. Osama Taha 77

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1 Turkey 371820 8311775
2 Brazil 125883 4810600
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4 India 89794 3770066
5 Romania 53900 559078
6 Portugal 48462 323491
7 Russia 37664 1356015
8 Iran 29944 4184296
9 United Kingdom 14853 900454
10 Germany 14154 85833
11 Syria 13848 1401341
12 Serbia 13575 222679
13 Macedonia 12913 962599
14 United States of America 12467 1431532
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16 Israel 4901 71366
17 Lebanon 4804 545576
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