The sun was setting and the sky turned pink at spode today. I looked up and saw the moon. A tiny bit bigger than half moon and I realised that you could work out where the sun was setting. Basically imagine you were shining a torch on a ball. If the torch was directly to the side if the ball the ball would be exactly half light and 🌗 half dark  Now if the torch was lower but shining directly on the ball it would be half light and half dark but tipped at an angle depending how low below the horizon the torch (or ☀ sun) was. Now imagine if the torch was level but was shining slightly to the side of the moon nearest us? Then the line between light and dark would shift and curve. The line shifts every night till full moon, then as it passes full moon the shadow starts to get cast on the other side. This leads to the understanding that when we get an eclipse the Earth gets directly between the Moon and the Sun… . Oh I know all of this is simple, but I’d never actually thought it out for myself……

P.S. now 5 hours later the angle of the moon is tipped up so that the curve is on a slant … so the sun is clearly lower down and the moon has moved. .but it also shows the world is rotating too…