Which of these statements is true about planets? Planets A. revolve around the sun
B. are spherical in shape
C. rotate in its axis
D. all of the above​

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium