Aurora

IMG_20191016_182532_487 (2) (2) (2)_optimized

The sun is starting to wake up after Solar Minimum. Apparently there was a coronal mass ejection from the sun yesterday. This means that a twisted magnetic line of energy had broken and exploded with plasma coming out of the Sun. The energy can fly out in any direction but sometimes the CME heads towards Earth, then the magnetic feild around the Earth shields us. Except at the poles. Its like when you put iron filings on a bar magnet. You can see the magnetic field lines and the way the iron filings follow them. The magnetic lines dip down towards the magnetic poles. This is what happens at the North and South poles of Earth. The energy from the sun is channelled towards the poles and excites the gasses in the atmosphere. I think Nitrogen glows green and Oxygen pink? I’m not sure.

Anyway there has been a CME from the Sun and the chance is there might be some Auroral displays in the next few days.

Aurora

sketch-1550405688049

“And what is Life?—An hour-glass on the run,
A mist retreating from the morning sun,
A busy, bustling, still repeated dream;
Its length?—A minute’s pause, a moment’s thought;
And happiness?—A bubble on the stream,
That in the act of seizing shrinks to nought.”

[From ‘What is Life?’ (1820) by John Clare]

I just read this quote and thought about what I would love to see. My friend recently visited Iceland and was lucky to see the aurora borealis. I decided to try and draw it since I haven’t had the opportunity to see one. I was surprised to find out they can be colours other than green which is caused by Nitrogen ions in the atmosphere. The pink is from Oxygen.

The magnetic North Pole of the Earth is drifting towards the actual North Pole at several kilometers a year. There is speculation about what is causing this. But as the Earth’s has a molten iron core it causes a magnetic feild generated by the movement of the Iron. The earth’s magnetic feild may flip (it has before) and so the aurora may drift further south.

The magnetic feild lines emerge from the poles like a bar magnet. This is where the Earth’s magnetosphere is at its weakest and the solar wind, which is made up of charged particles, comes down the magnetic lines and causes the gases in atmosphere to glow.

I wish I had more knowledge about it and I hope one day I will see it.