Which types of galaxies lack an ordered structure of stellar orbits?
a. elliptical galaxies only
b. spiral galaxies only
c. irregular galaxies only
d. elliptical and irregular galaxies
e. spiral and irregular galaxies
Question 2
Which telescope is the largest refracting telescope in the world?
a. Large Binocular Telescope
b. Gemini-North optical telescope
c. Very Large Array
d. Keck telescope
e. Yerkes Observatory refractor telescope