How are Lunar Eclipses Caused?

I have been thinking about lunar eclipses from both a heliocentric and geocentric (flat earth) perspective, and there are a few questions for which I haven't been able to find an answer. The so-called scientific explanation does not make a lot of sense - I've tried replicating it with small balls and a flashlight. From the flat earth perspective, I suppose there is a lot of thinking/experimenting to do to explain how the moon really works.

- Why do lunar eclipses happen only on a full moon night? 

'Science' says this happens when the sun, moon and earth are in alignment. Can they never be in alignment when the moon is in a different phase? According to previous data, lunar eclipses can happen at any time in the night - from 6.00 pm to 6.00 am - then why not on a crescent moon night?  

- Why does the moon turn reddish (blood moon)? Watch this time lapse video to see what I mean: https://www.youtube.com/watch?v=3TcPO0wYf1g

'Science' says the only light reaching the moon is refracted from the Earth's atmosphere. Really? From the dark night sky of the earth - red light is reflected? Over more than 384,400 kilometres? Then, why does the moon turn black - then glow reddish, and later turn black again? 

- How can lunar eclipses be viewed from any place on the night side of the earth, while solar eclipses can only be viewed from certain areas? 

- Why do lunar eclipses last a few hours while solar eclipses last only a few minutes? 

According to 'science' this is because the shadow of the earth thrown on the moon is bigger, while the moon's shadow thrown on the earth (with the sun behind it) is smaller. However, the math does not add up for this. 

- Why is there a six-month difference between the two lunar eclipses? 

I found a possible answer to these questions in Indian Astronomy. 

According to ancient Indian 'heliocentric' astronomers (like Aryabhata), 'Rahu' and 'Ketu' are ascending and descending nodes of the moon where the moon's orbit clashes with the sun's orbit (eliptic) on the common 'plane of the sky'. They fall six-months apart (lunar months), and hence there will be at least two in any given year. Hence, if the last one was on 31st January 2018, and the current one is on 27-28th July, then the next lunar eclipse would have to be on the full-moon night in January 2019.

According to geocentric Indian astronomers, Rahu and Ketu are two dark planets in the sky just like the other planets - Mercury,Venus, Mars, Jupiter and Saturn. As they move in particular orbits over the flat earth plane, it is not very difficult to predict their paths and the time of the next lunar eclipse - obviously the full moon night after another six months. As Rahu and Ketu are known to have a negative affect, it is best to stay indoors and follow best practices to safeguard oneself. 

I still haven't found an answer to all the questions above, but the evidence of geocentric Indian astronomers (though ridiculed by modern brainwashed 'educated' Indians today) seems the most practical. What do you think?