2. Total lunar eclipse over Baltasound
But why do we not see a lunar eclipse each month with the full moon?
The answer lies in orbits. The moon’s orbit around Earth is tilted 5 degrees to the Earth’s orbit around the sun, so a lunar eclipse can only happen when the sun is exactly aligned with the Earth and the moon. This happens two to four times a year.
Still, lunar eclipses are more common than solar eclipses (when the moon is between the sun and the Earth) because the moon is much closer to the Earth than the sun.