From: Iowan in MD/DC
Sunspots do result in some variation in solar energy, obviously, but the Little Ice Age may have actually been caused by vulcanism (seems far more likely to me, especially given evidence of 4 enormous eruptions within 50 years). Mount Samalas in the 1200s, and then there was Tambora in 1815 that caused wintry conditions in June and July in the northern hemisphere.
I'll go read that article on the supernova.
Another thing to note about the moon is that its presence creates a drag on the planet's rotation and eventually "we" will be tidally locked with the moon, just as it is with us (the same side always faces us). That won't happen for billions of years, though - and the planet would have to not be swallowed by the sun's red giant phase first.
Exactly when the Little Ice Age began has some debate, but around 1600-1650 is the most common start time. The Mount Tambora eruption for 1815 did affect global weather for a few years, but particles from a single eruption generally fall out of the atmosphere fairly quickly. An ongoing major eruption that spews for a period of time has more effect. The nearer the equator the bigger the impact too.
Damn.....threw an astronomy reference into the thread like a hand grenade and it brought all the astronomy bugs out of hiding.
Good job guys! I had no idea there were others here with "other" hobbies like me....well except for military modeling that is....we've already established there is a strong core of modelers here.
I'm a poly-geek. I have at least a passing interest in just about anything. A couple of years ago we were at the Maryhill Museum which was the home built by Sam Hill who was one of the railroad tycoons of the 1800s. They collected a lot of art and the house and grounds were turned into a museum after Sam and Mary died. Interestingly Sam Hill also built a replica of Stonehenge overlooking the Columbia River not far away.
We were looking at all the exhibits at the museum and I realized I was taking a fair bit of interest in a room full of weaving examples from different North American tribes. I literally was interested in basket weaving. Though I probably will skip that part next time I go there.
Speaking of astronomy, this is my SO's favorite nebula:
I recently made it one of the wall paper images on our media computer (the one we use for streaming to the TV). She also loves the Pleiades. I made her a glow in the dark panel of the stars around the Pleiades that hangs over her side of the bed. And to tie in with modeling, I used a rattle can of Testors glossy dark Navy Blue (USN late war early 50s color) for the background. Charge it up with a black light and it glows most of the night.
The sources I saw show the Little Ice Age as beginning in the 1200s (when the temperature began to fall, anyway). The most extreme variances from the temperature trend were in the 1500-1600s, however. I was looking at the graph on the top right of the Wiki article. https://en.wikipedia.org/wiki/Little_Ice_Age
In addition to particular matter such as ash, there's also the matter of sulfur dioxides from large explosions, which reflect more sunlight until it's out of the atmosphere, which is also why those 4 large eruptions in the 1200s are so persuasive to me as a cause. There were also a series of eruptions from the late 1500s into the late 1600s. A source on the 1200s eruptions here: https://www.sciencedaily.com/releases/2012/01/120130131509.htm
We're all poly-geeks around here. I stop short of saying polymath, but lots of us know a lot about a lot. Such is the nature of life.