A.When the gravitational pull of the sun is at right angles to that of the moon
B.The moon casts its shadow on the sun
C.Sun, moon and earth are in a straight line
D.None of the above
A.When the gravitational pull of the sun is at right angles to that of the moon
B.The moon casts its shadow on the sun
C.Sun, moon and earth are in a straight line
D.None of the above