This article was originally published on the Hoosier State Chronicles blog on August 26, 2016. The known universe is big; insanely big! At a staggering age of 13.8 billion years, our observable universe has a diameter of 92 billion light-years. Over the last century, astronomers, physicists, and mathematicians have helped us understand a more precise … Continue reading Vesto Slipher: Uncovering the Cosmos