New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from the early cosmos.

Cosmic dawn galaxies seen by JWST reveal hidden clues about dark matter and keep rival theories about its true nature alive.

From a particle smasher encircling the moon to an “impossible” laser, five scientists reveal the experiments they would run ...

Revisiting old data from Voyager 2, scientists have worked out how a dense, shocked region of the solar wind could have ...

For over two decades, cosmologists have believed that the universe is expanding at an accelerating pace, driven by a ...