Why is the moon red during a lunar eclipse?
Philosophy of science
4 October 2008
Conventional science considers that the moon turns red during a lunar eclipse for unsubstantiated reasons. This is an alternative theory:

Whilst the moon is in the Earth's shadow, it reflects the ambient light of the surrounding stars. The majority of the surrounding stars are red dwarfs. They are not normally visible as their light is too faint on an individual basis.

Whilst in the Earth's shadow, the convex shape of the moon condenses the light from all these red dwarf stars, and then reflects it back at the Earth, as the digram below shows.
Further thinking :

The red of the moon is the ambient light of the surrounding universe, but not necessarily from red dwarfs. Because of the Doppler effect, most objects (except nearby ones) have the red shift.

The nearby red dwarfs, add to this, but to what extent the cause is the red dwarfs, or the red shift of the doppler effect, is not really possible to ascertain from thought experiments. But it seems clear to me, that it can only be a combination of these two red light sources.

Here is a discussion, at the philosophyforum where I argue for this theory, while my adverseries provide a lively counter-debate. You can even join in if you like.

www.philosophyforum.com/forum/lounge/...why-moon-red-during-lunar-eclipse
To conclude:
The moon is red during a lunar eclipse because the universe is expanding.
Philosophy Introduction
Philosophy of Physical Science