Particle Physics & Astrophysics
After more than six years of grinding and polishing, the first-ever dual-surface mirror for a major telescope is complete.
A new experiment is on the hunt for dark photons, hypothetical messengers of an invisible universe.
Cosmic inflation refers to a period of rapid, accelerated expansion that scientists think took place about 14 billion years ago.
Astrophysicists inspire space-related projects at a 24-hour hack-a-thon in San Francisco.