Which of these (hypothetical)modifications would cause lunar eclipses to happen once per month?
A)Change the Moon's orbital plane so it tilts the opposite way.
B)Make the Moon orbit the Earth twice as fast.
C)Change the orbital plane of the Moon so it lies in the same plane as Earth's orbit around the Sun.
D)Relocate the Moon to twice its current distance from the Earth.

Question

Quizplus · Accepted Answer

Lunar eclipses occur when the Earth passes directly between the Sun and the Moon, which can only happen when the Moon's orbital plane is aligned with the Earth's orbital plane around the Sun. This alignment occurs twice a year, resulting in two periods each year when lunar eclipses can happen. By changing the Moon's orbital plane to be in the same plane as the Earth's orbit around the Sun, it would ensure that the Moon passes through the Earth's shadow every month at Full Moon, resulting in a lunar eclipse once a month.

Which of These (Hypothetical)modifications Would Cause Lunar Eclipses to Happen