- 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.
- Epsilon Eridani (stars.astro.illinois.edu)
Epsilon Eridani is the closest star known to have a planet: and maybe two of them. It is the only system that has both precise Doppler data and long-baseline astrometric positional observations, which combined yield the orbital tilt and the true planetary mass. Given its closeness and the knowledge of where it is relative to its star, the planet may become the first ever actually imaged.