Uncover the secrets of Milky Way formation. New research uses simulations to explain the mysterious chemical divide in our ...
New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from the early cosmos.
For most of human history, the Milky Way has been a hazy band of light, a backdrop rather than a map. Now, by reading the chemistry of individual stars from within the disk itself, astronomers are ...