Question: What changes can a super moon make and how big can it get? Also what happens during a lunar eclipse and a solar eclipse?

Giuditta Perversi answered on 12 Nov 2015:

The Supermoon is the way you call the Moon in the moment in which it gets the closest to the Earth and you can see it as bigger. Of course the Moon in itself is not changing mass or dimension, it just happens to be closer than the usual to us (the orbit is elliptic, a squashed circle, so if it passes on the “squashed” point it’s actually closer than when it’s in the “pulled” ones).
I’m not sure about how big it can look to us in relative numbers, though!

In a lunar eclipse, you have the alignment of Sun – Earth – Moon in the order I wrote them, so the Earth is actually casting a shadow on the Moon and covering it from the Sun (the Moon looks so white because it’s reflecting the light from the Sun).
In a solar eclipse, you have Sun – Moon – Earth in one straight line, so it’s actually the Moon that it’s casting a shadow on the Earth, covering the Sun.
Since the Earth it’s much bigger than the Moon, it’s much more easy for it to cast the shadow and creating a lunar eclipse, that’s why they are much more common. The Moon is really small and the alignment needs to be much more precise for the “shadowing” to work, it’s really rare for it to be total and it’s only visible on small regions of the Earth!