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

The search for the biblical Star of Bethlehem has long hovered between faith and astronomy, but a new claim from a NASA comet ...

The cosmos has served up a gift for a group of scientists who have been searching for one of the most elusive phenomena in ...

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?

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

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

Avi Loeb links the strange behaviour of interstellar object 3I/ATLAS with the rise and fall of the sterile neutrino debate in ...

Current physics is speeding toward a breaking point, as astronomers confirm that the Hubble tension in new data.

Neutrinos are one of the most mysterious particles in the universe, often called "ghost particles" because they rarely ...

Harvard astrophysicist Avi Loeb criticizes ‘self-declared’ experts for ignoring 3I/ATLAS anomalies despite pursuing similar searches for sterile neutrinos ...