- The Black Eye Galaxy (also called Sleeping Beauty Galaxy or Evil Eye Galaxy and designated Messier 64, M64, or NGC 4826) is a relatively isolated spiral galaxy 17 million light-years away in the mildly northern constellation of Coma Berenices. It was discovered by Edward Pigott in March 1779, and independently by Johann Elert Bode in April of the same year, as well as by Charles Messier the next year. A dark band of absorbing dust partially in front of its bright nucleus gave rise to its nicknames of the “Black Eye”, “Evil Eye”, or “Sleeping Beauty” galaxy. M64 is well known among amateur astronomers due to its form in small telescopes and visibility across inhabited latitudes.
- PICRIC ACID HAZARDS (PDF) (oag.ca.gov)
Every couple months, an article appears in the local paper about a bomb disposal team removing picric acid that was found in a laboratory. The material is usually taken to be blown up. So why is picric acid considered so dangerous? Well, let’s look at the history of the use of Picric Acid and see what can be done to avoid those types of situations.