For humans, the most important star in the universe is our Sun. The second-most important star is nestled inside the ...
Edwin Hubble's discovery of the expanding universe transformed cosmology, revealing countless galaxies and laying the ...
"Finding more supermassive black holes that are potentially hosting jets raises the question as to how these black holes grew ...
Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.