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View submission: Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
Putting in a second vote for AAVSO! Stellar variability is one of our best tools for studying stars and stellar systems, but a lot of phenomena are one-off or widely separated in time, and there are a *lot* of stars out there. Organizations like AAVSO allow for much broader coverage than you could get with just the big observatories - the data isn't as high-quality as you'd get from a fancier telescope, but you cover so much more ground.
There's nothing here!