For more than ten years, astronomers have observed an enigmatic gamma glow coming from the heart of our Milky Way. Known as ...

Gamma. Unless you're talking about Bruce Banner, it's probably not high on the list of interesting things. In fact, in this context, we're not even talking about the highest-energy form of light.

The Greeks (which include delta, gamma, theta, vega, and rho) provide a way to measure the sensitivity of an option's price ...