Antonie Pannekoek, Dutch astronomer and theorist (d. 1960)
Antonie “Anton” Pannekoek (Dutch: [ɑntɔn pɑnnəkuk]; 2 January 1873 – 28 April 1960) was a Dutch astronomer, philosopher, Marxist theorist, and socialist revolutionary. He was one of the main theorists of council communism (Dutch: radencommunisme).