Cepheid Variables are the primary reason we can calculate our distance to most objects, as well as the universe's expansion. A seemingly innocuous set of stars that varied in brightness over time allowed astronomers to figure out how far things are from us, and later on, helped to prove the existence of galaxies aside from our own.
Nuclear fusion, once thought of as a mere pipe dream, is now seemingly on the horizon of attainability, as new experiments performed by some of the brightest minds in the scientific community have indicated increased promise within fusion technology.
