The Hungarian sheet received nearly half of the votes, followed by a stamp from Malta and another from Turkey.
Peter Nagy's composition has been inspired by Galileo Galilei's famous phrase And Yet it Moves and it shows the Italian astronomer's portrait, a spacecraft named after him in 1989 and the Jupiter with its four satellites which he discovered.
PostEurop, the association of European public postal operators selected astronomy as this year's theme for the competition as 2009 had been declared the International Year of Astronomy by the United Nations.
Last year's winner was also Hungarian, the post said, noting that it is unprecedented that the same country has won the award twice in a row.
Source: Hungarian News Agency (MTI)