"Discrepancies in the Measured Expansion Rate of the Universe" Abstract: The most basic parameter in our description of the expanding Universe is the current expansion rate, given by the Hubble […]

"CRISPR" "New Advances in Genetic Engineering: The Nuts, The Bolts, Frankenstein Monsters?, and Ethics"   In the last 150 years we’ve had an amazing advancement in our understanding of the […]

Copernicus' Epicycles Nicolaus Copernicus (1473-1543) is sometimes called the father of modern astronomy. He's famous for introducing to Western Europe a thorough and worked-out model of the Solar System with the Sun at the center. At the time, nearly everybody accepted Ptolemy's Earth-centered model, with planets riding on celestial spheres, and riding on epicycles inside […]