One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate’
In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...
New York Magazine2d
On My Mind: Tiny e-Readers and Fanny Packs
I wish I could replace my phone with the Palma, but I still keep my iPhone handy for taking pictures and ignoring calls. This ...