Detailed map of dust in Milky Way

Credit: ESA/Gaia/DPAC We now have the most detailed catalogue of stars in our Milky Way galaxy yet. The new map -- created using data collected by the Gaia satellite -- shows about 1.7 billion ...
The warp in the Milky Way's spiral disk is precessing backward under the influence of the enormous mass of dark matter ...
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 ...