Explain how the cell theory was reached by a collaboration of experiments and ideas from numerous scientists

The discovery of the cell was made possible by the invention of the microscope, which was made possible by improved lens-grinding techniques. Antoni van Leeuwenhoek (1632-1723), a Dutch tradesman, learned to grind lenses and assemble them into simple microscopes.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus