So, I have a casual interest, but I find them intriguing. I recently took a trip to Lassen National Park, and saw this boiling mud pool. https://imgur.com/n6dV92U. I am planning a trip next year to Pompeii and Herculaneum. Someday, I am interested in seeing volcanoes in Hawaii and Iceland and maybe more. I casually enjoyed HarryTurtledove's survival novels about Yellowstone erupting, although they are not great literature by any means.

What about you? Any cool experiences with volcanoes or bucket list plans that you would like to share? Do you know fun facts? Do we have any geologists in the room? Take this prompt in any direction you would like.

I enjoy a few weather tools. For example, I enjoy
blitzortung that shows live lightning. Currently, you can see a long chain of lighting through eastern Germany and up through Denmark, Sweden and Norway.

This is expected, since we’ve had very warm weather for a while, and it’s supposed to change to colder weather soon.

But is there a good website that can show me easily the weather front that is currently creating all those lightning strikes? The sites I know only shows vague colors and you can perhaps implicitly see some change in pressure, wind, temperature etc, but nothing that clearly shows an east front where for example you would expect lightning soon.

I was always familiar with tornadoes living close to or in Oklahoma for a vast majority of my life. However, with the odd weather patterns we’re seeing this year producing severe weather, I’ve gone way down the rabbit hole. Watching weather livestreams, subscribing to chasers, the works. Has anyone else been on the bandwagon?

Ok ok disclaimer, I am a cosmology PhD candidate, don’t have the degree yet. However I do feel comfortable at this point calling myself a cosmologist (I think for the first time ever). In any case, with all the new people here, I think an AMA might be fun. I will try my best to answer all of the questions I get asked, but it may not happen quickly!

A bit about my research. I study the conditions in the early universe, specifically when the cosmic microwave background was forming, and I use CMB data to test our understanding of this era. The CMB formed roughly 300,000 years after the big bang, when the universe was 1/1000th its current size. The patterns that we see in the temperature fluctuations of the CMB can tell us a lot about the universe at this early time, and specifically we can try to use them to see if anything ‘unexpected’ happened at this time, like a hitherto undiscovered particle annihilating into ‘normal’ particles (for example).

Ask me anything about the early universe, or physics writ large, and I will do my best to answer!