Ammonium Nitrate by itself is quite stable, without a detonator, pure ammonium nitrate does not explode, which is why it is considered safe to use as an agricultural fertilizer. The chemical compound is a white salt and an oxidizer (it fuels fires by supplying oxygen). However, when mixed with carbons such as fuel oil, it can be used for commercial explosions, for mining and other purposes.
NOR is short for Natural Organic Reduction. It is defined as "the contained, accelerated conversion of human remains to soil." This process uses large tanks, containers, or similar vessels to hold human remains together with straw, wood chips, and/or other natural materials for a period of time of about four to six weeks.
Solar sails work very similar to solar panels on Earth, a photon knocks an electron out of orbit of its native atom, and drives a circuit which provides power for the onboard-electronics, life-support, etc. Also, given enough photons, it could provide enough
"radiation pressure" to propel a craft with mounted solar sails, no different than a wind hitting a sailboat on Earth, hence the name "solar wind". Moreover, if the sail has a large enough reflective surface area and is made of sufficiently light material, the photons from the Sun should be able to exert enough pressure to move the spacecraft.
Overpressurization is defined as transient air pressure, such as the shock wave from an explosion, that is greater than the surrounding atmospheric pressure.