A: Plutonium is, in fact, a metal very like uranium. If you hold it [in] your hand (and I've held tons of it my hand, a pound or two at a time), it'sheavy, like lead. It's toxic, like lead or arsenic, but not much more so. Going Nuclear Episode 7 - Plutonium Production...
Suppose you take a really heavy atom—a stable kind of uranium called uranium-235. Each of its atoms has a nucleus with 92 protons and 143 neutrons. Fire a neutron at uranium-235 and you turn it into uranium-236: an unstable version of the same atom (a radioactive isotope of uranium)...
Standing on the same Launch Pad as Apollo, was a new generation of Rocket, the HeavyFalcon 9built and operated by a private company – SpaceX. Sitting on top was a manned vehicle “Dragon 2”, flown by two ex-Shuttle pilots, Bob and Doug.. ...
Considering that rockets can go thousands of miles per hour, you may wonder why a difference of only 144 mph would even matter. The answer is that rockets, together with their fuel and their payloads, are very heavy. For example, the Feb. 11, 2000, liftoff of the space shuttle Endeavour...
some of the minerals from the tailings ponds and mine sites can migrate very far away and show up in foods produced at a distance. Because of this, even organically grown foods can have some small amounts of less than desirable compounds like copper, arsenic, heavy metals, and even radioac...