This is less a real post than a promise for the future: I have several projects brewing this week and next, both on this site and elsewhere in the wild world of the web. (I may even have a regular post here today, but don’t count on it.) Two of the projects are sooper seekrit for the time being, but the third is another podcast I’m recording for 365 Days of Astronomy, to be broadcast on June 13.
In the meantime, have a look at this image from today’s Astronomy Picture of the Day: a supernova explosion in the beautiful spiral galaxy M51. The two alternating snapshots are “before” and “after” pictures, showing how quickly supernovas occur — and how bright they are! For a brief period of time this explosion is brighter than anything else in its host galaxy, and actually appears brighter than many of the stars in the foreground, which lie in our own galaxy –a lot closer to us than M51.