The inner Martian moon, Phobos, is 28 km in diameter and 6000 km above the Martian surface. Earth's Moon is about 3500 km in diameter and 400,000 km from Earth. How big in apparent diameter (angular size) would Phobos be in the Martian sky when seen directly overhead compared to our own Moon as seen from Earth?
A)less than 1/100 the size of our Moon
B)almost twice the size of our Moon
C)about 1/12 the size of our Moon
D)about half the size of our Moon

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The Answer of The inner Martian moon, Phobos, is 28 km in diameter and 6000 km above the Martian surface. Earth's Moon is about 3500 km in diameter and 400,000 km from Earth. How big in apparent diameter (angular size) would Phobos be in the Martian sky when seen directly overhead compared to our own Moon as seen from Earth?
A)less than 1/100 the size of our Moon
B)almost twice the size of our Moon
C)about 1/12 the size of our Moon
D)about half the size of our Moon

The Inner Martian Moon, Phobos, Is 28 Km in Diameter