Tag: Coronal Mass Ejections

The sky keeps shining green.

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How the sky changed colour last night, apologies for the Parkinsons shake. I was lying in bed with nothing to prop my phone on. The best photo I took was the last (in the middle) about 2am?I couldn’t see much with the naked eye, but there had been a forecast of auroras on spaceweather.com so I chanced a snap or two, they started as a normal blue for a 60 second exposure, but then over the next few minutes it gradually changed to green.

Note the sun is at solar maximum where the magnetic north and south fields are increasingly entangled and cause coronal mass ejections, solar flares from the Sun’s surface. This weekends aurora were caused by an Earth facing set of flares.

There’s a comet out there…

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Somewhere at sunset a comet called Leonard is heading in towards the sun. It has two tails and is near Venus in the night sky. The tails are quite long and have become more visible. One is a tail of cometary gases heading away from the sun, and the other is an ion tail which curves due to the sun’s magnetic field. I love astronomy and the information is what I remember from watching TV shows. The trouble is it’s foggy here now! I think it will have disappeared by the time our weather improves.

For more (and much better) information go to Spaceweather.com it’s full of interesting information about the sun’s coronal Mass ejections, X Ray flares, Cosmic Radiation and Near Earth Objects (chunks of rock, asteroids, meteors, that are near the earth and flying past us), sunspots and its magnetic field. There are also videos and photos of the sun’s activity. Worth a look.

Aurora

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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.