26) ....of Poland revolutionized the thought of mankind by proving that the earth moves round the sun.

27) Galileo was an .. astronomer

28) John Kepler was an .... astronomer

29) The term Renaissance was first used by the Italian artist and critic ....in his book ′The Lives of the Artists′

30) The Renaissance was first defined by .....historian Jules Michelet (1798-?1874), in his work, ′Histoire de France′.