Astronomer here! AMAA!
My short bio:
Astronomer here! Many of you know me from around Reddit, where I show up in various posts to share various bits of astronomical knowledge, from why you should care that we discovered two neutron stars merging to how the universe could end any moment in a false vacuum. Discussing astronomy is a passion of mine, and I feel fortunate to have found such an awesome outlet in Reddit to do so!
In the real world, I am an astronomer at the Dunlap Institute for Astronomy & Astrophysics, University of Toronto, Canada, where I am conducting my PhD research. I spend my days looking at radio signals from outer space- in particular, ones that vary over time, like when a star explodes in a supernova explosion or when a star gets eaten by a black hole. I've also written a smattering of freelance magazine articles for magazines, like Astronomy, Discover, and Scientific American. My personal subreddit is here, and my website is here.
Finally, if you are in the Toronto area, I am giving a public lecture this Friday you may be interested in! I am one of three speakers at Astronomy on Tap Toronto, where three astronomers give TED-style talks on different astronomical topics (plus we have some games, share astro news, and there's a cash bar in the back). It's a very fun event with no prior astronomy knowledge assumed- as a teaser, my talk will be on what would happen if we saw a supernova go off in our galaxy whose light reached us tonight! If you aren't from around here, go to this site to see if there is a Tap near you.
Ok, ask away! :)
Edit: I have tried to answer everyone's questions who posted so far, and intend to keep responding to all the ones I get in the future until this thread is locked. So please still ask your question and I will get back to you!