The Moon’s orbit around Earth is elliptical, in the shape of an elongated circle.
If the Moon is at its farthest point away from Earth at the time of a solar eclipse, its shadow is too short to reach Earth. And the Moon is too far away to obscure the whole Sun. The round Moon blocks all of the Sun except a bright ring of light, or annula, visible all around the edge of the Moon. It is an impressive event.
A lunar eclipse occurs when Earth blocks the Sun’s light from hitting the Moon. Lunar eclipses only occur when the Moon is full, and they can be viewed without light filters or telescopes. Strong filters are necessary to view a solar eclipse.
In a solar eclipse, the Moon passes between the Sun and Earth. Viewers in the dark area see a total eclipse, while viewers in the shaded area see a partial eclipse. Because the Moon’s shadow on Earth is small, viewers in some parts of the world do not see the eclipse at all.