12/05/2024
Our atmosphere is a layer of mixed gases, mostly Nitrogen & Oxygen. This thin layer, with respect to Earth, is equivalent to the thickness of the skin on an apple. We, along with all life on our planet, depend on this tiny layer for our existence.
Arriving here at a million miles per hour, comes a blast of charged particles from the Sun, spat towards us by a sunspot many times the diameter of Earth. Our magnetosphere, like a giant magnetic shield wrapped around us, deflects most of it away into space.
But - near the North & South poles, some particles sneak past our trusty shield and our atmosphere suffers a wounding blow. Atmospheric gas molecules have a bit of a wobble but quickly recover - Oxygen molecules shining green or red and nitrogen shining blue or purple as they relax back to normal. Mostly, all's well once again.
Without our magnetic shield, our atmosphere would not survive these repeated attacks - all of it would be blasted off the planet and lost into space.
So while you reflect on Nature's awesome power and beauty, take a moment to appreciate the fragility of our existence, beetling along oblivious, under this tiny appleskin-thin atmosphere.
Photo: Fife-Keith, Scotland. 00:47 on Saturday 11th May 2024
Nikon D850, 16mm fisheye, 15s @ f/4, ISO800