Keeping track of time seems simple. A watch ticks, a pendulum swings, and a calendar flips. But at the quantum level, marking time is far more complicated — and far more expensive than anyone expected ...

NASA has confirmed its sightings of the farthest known galaxy to date, providing an unprecedented look back into the early ...

Will two rare supernovas finally tell us how fast the universe is expanding? Perhaps, but we'll have to wait for it for them ...

At 15, a Belgian prodigy finishes a quantum physics PhD and turns to AI-driven medicine, raising an unexpected question about ...

A young star called V1298 Tau is giving astronomers a front-row seat to the birth of the galaxy’s most common planets. Four massive but extremely low-density worlds orbiting the star appear to be ...