Original: Johann Palisa ( December 6 , 1848 â '' May 2 , 1925 ) was an Austrian astronomer , born in Opava in Austrian Silesia ( now in the Czech Republic ) .
Simplified: Johann Palisa ( December 6 1848 â '' May 2 1925 ) was an Austrian astronomer , born in Troppau in Austrian Silesia ( now in the Czech Republic ) .