[BAFacts are short, tweetable astronomy/space facts that I post every day. On some occasions, they wind up needing a bit of a mathematical explanation. The math is pretty easy, and it adds a lot of coolness, which I'm passing on to you! You're welcome.]
Today's BAFact: How much brighter is the Sun than the faintest object ever seen? About Avogadro’s number times brighter.
Yesterday and the day before I wrote about how much brighter the Sun is than the Moon, and how much brighter the Sun is than the faintest star you can see (note that here I mean apparent brightness, that is, how bright it is in the sky, not how luminous it actually is). I have one more thing to add here. Years ago, I worked on a Hubble Space Telescope camera called STIS
- the Space Telescope Imaging Spectrograph. At the time, it was the most sensitive ...
