Astronomers have used a special class of ancient, pulsating stars as celestial lighthouses to map the earliest chapter of our Galaxy's life and what they've found is rewriting what we thought we knew about how the Milky Way was born. By building the largest e…
Imagine trying to reconstruct the history of a city by studying only its oldest surviving buildings. You can't watch it being built, you can't interview the architects, all you have are the structure… [+2975 chars]
