This was fun to report. A short article, called “Lucky Star,” is out in the new California magazine about astronomer Maryam Modjaz and her work documenting a supernova. The twist was that, through a bit of good luck, she and her colleagues had telescopes pointed at it the whole time–before it even exploded.
In the image below, we see three shots of the galaxy NGC 2770. The typical spiral galaxy might have one supernova in a century; this one has had three in the last ten years.