Question

What is a total lunar eclipse definition?

Answer 1

A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the sun, Earth, and moon are aligned (in "syzygy") exactly, or very closely so, with the Earth in the middle.

Answer 2

Answer:

A total lunar eclipse occurred on January 31, 2018. The Moon was near its perigee on January 30 and as such may be described as a "supermoon", when the Moon's distance from the Earth is less than 360,000 km. The previous supermoon lunar eclipse was in September 2015