World

_20200303_224853what would happen if the Earth was tipped up on its axis?

The world would spin so the equator was spinning at nintey degrees or so to where it is now. Every twenty four hours it would still spin West to East as it does now, but the Sun would not rise and set every day. I think it would only do that when the Earth was mid way between when either pole faced the Sun. Because the Earth rotates round the Sun. So the North or North East or North West would face the Sun for half  of the year and the South, South East and South West for the other half.

So what would happen to the poles? Even now, because the Earth is tipped at an angle and doesn’t rotate vertically, we get summers and winters. So there¬† twenty four hour days in the polar summer, and twenty four hour nights in polar winter. If the Earth was tipped over more the twenty four hour days and nights would last for months. The side away from the Sun would be colder, the side towards it would be hotter. Perhaps all the ice would melt at one pole and freeze much more at the other? Who knows? I’m sure scientists would have the answer. Thankfully we don’t face that question. Sadly we do face climate crisis. We need to sort out the current situation. How? I don’t know the answer to that. But perhaps we should follow what teachers put on school reports. We must try harder?!

Green skies

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The Aurora borealis is something I’ve never seen but always wanted to. When I see photos of it I’m amazed that electrons from the suns solar wind can cause such beauty.

The electrons and other particles travel along the magnetic lines of force at the North Pole (and South – the Aurora Australis I think it’s called). As they interact with the magnetic field they glow. The different colours denote different elements. I think Green is Nitrogen and Pink is Oxygen.

The Aurora occur at the poles because they are where the magnetic field is at its weakest and drops down towards the pole. If you have seen iron filings round a bar magnet you can see how the field curves round and down.

So what is solar wind? It is the matter that pours out from the sun when there is a hole in the corona (upper atmosphere of the sun). There are coronal mass ejections where the sun spews out masses of ionised electrons which interact with Earth’s atmosphere.

There is a lot more about aurora’s but my knowledge is not good enough to explain more.