Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside ...
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 ...
In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...
A hundred years ago, astronomer Edwin Hubble dramatically expanded the size ... Estimating distances in astronomy is challenging. Think of how hard it is to estimate the distance of someone ...
Chris Impey, University of Arizona (THE CONVERSATION) A hundred years ago, astronomer Edwin Hubble dramatically ... Estimating distances in astronomy is challenging. Think of how hard it is ...