Some one help me please.....in the history of astronomy,wich of the following is true? 1.tycho brahe built one of the first observatories. 2.ptolemy was critizised for his work on the helioncentric model. 3.nicoleause copernicus argued that the sun was the center of the universe. 4.johannes kepler argued that earth was the center of the universe.

Question

Some one help me please.....in the history of astronomy,wich of the following is true?                                       1.tycho brahe built one of the first observatories.                     2.ptolemy was critizised for his work on the helioncentric model.                                                                                   3.nicoleause copernicus argued that the sun was the center of the universe.                                                             4.johannes kepler argued that earth was the center of the universe.