Einstein was a great thinker who made plenty of mistakes—errors that sometimes led to more meaningful discoveries in physics, long after his passing.
A groundbreaking experiment demonstrates yet again that light exists both as a wave and a particle in the quantum world—but we can’t see both at the same time.
The structure is nearly 600 million light-years from Earth and is an early display of the nascent dark matter telescope's power.
The puzzling discovery may force astronomers to rethink the origin of gamma ray bursts.
A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.
