Who’s the guy handing Trump those binders of executive orders?
Those binders full of executive orders that President Donald Trump has been signing with a flourish in recent days don’t just ...
One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate’
Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside our galaxy.