Re: Global Warming
The Earth is a closed system in which every action has an equal and opposite reaction. The Earth will survive anything that humanity throws at it, even nuclear war. All it takes is time and the planet has an infinite amount of that.
What the climatologists seldom talk about is the fact that the entire solar system, the sun, planets etc are all travelling around a central point in the galaxy. Just as the Earth has its seasons because it travels around the sun and is sometimes closer and sometimes further away, so too the entire solar system must be impacted by it's journey around the galaxy, presumably sometimes being close to that central point and other times further away. There must therefore be "solar seasons" though no-one tells us about them.
When you consider the enormous size of some of the stars out there, you have to conclude that at times those giants must have some impact to us.
Here are some pictures to show the scale.
First our planets in relation to the Sun, no shocks here:
Now look at the scale of our "huge" Sun compared to other key stars out there, look at how huge Arcturus is compared to our tiny Sun and note that Jupiter is 1 pixel here and the Earth is invisible at this scale:
Now look at even more super stars out there. See how huge Antares is compared to Arcturus and note that our tiny Sun is 1 pixel here and Jupiter is invisible at this scale:
If our Sun, infinitesimally small as it is, can exert so much impact to our planets, how much impact must there be whenever our solar system travels close to super stars like these?!
The Mayans and other ancient civilisations knew something of this galactic cycle. One orbit of our solar system around the galactic centre of our galaxy (The Milky Way) takes approx. 250 million terrestrial years. The Mayans predicted that great calamity/disaster happens routinely at a certain point. Perhaps that happens when we come closer to some of these enormous super suns and they exert their gravity and heat and radiation ? Who knows.