Science

My curiosity was sparked by reports that Iran had enriched its uranium stockpile to 60%. What did it mean, I wondered?Natural Uranium CompositionNatural uranium ore consists of approximately 0.7% uranium-235 (U-235) (the primary fissile isotope) and 99.3% uranium-238 (U-238) (a fertile isotope), plus trace uranium-234. U-235 sustains chain reactions directly, but the vast majority of uranium—U-238—holds enormous untapped energy potential through conversion into fissile materialUranium Enrichment and U.S. Navy ReactorsEnrichment boosts the U-235 fraction. Commercial light-water reactors use low-enriched uranium (LEU) at 3–5% U-235. Weapons-grade material is ~90%+ U-235, while U.S. Navy propulsion reactors (submarines and carriers)…

I am addressing this because Congress members are appearing in a new "documentary" claiming that the government has space aliens and their spacecraft. Aliens face the same physics of space travel that we do. The distances to other solar systems are measured in light-years. E=mc² applies to aliens, too. They cannot travel at speeds greater than light or close to light. Sure, 186,282 miles per second sounds fast until you know the vast distances between the solar systems and galaxies. Even if they could get to 40% of the speed of light, it would take thousands of…