As if dark energy weren't already mysterious and baffling enough, new research suggests that this unknown force may not be ...
Comet 3I/ATLAS reached perihelion on October 30, 2025. While astronomers around the world had been watching this rare ...
Korean scientists studying Type Ia supernovae have found strong evidence that the universe's expansion is not accelerating, ...
Could one cosmic event outshine 10 trillion suns? Astronomers have now observed just that a record-breaking flare from a supermassive black hole, fueled by the cataclysmic destruction of a massive ...
It is widely accepted that the universe is expanding at an accelerating rate, but now researchers say our measurements of the ...
A remarkable new study challenges the findings of Nobel Prize-winning research into how our universe has changed over time.
A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at ...
A peculiar object discovered by the James Webb Space Telescope just 700 million years after the Big Bang could reveal the ...
The only possibility left was an extraordinary one: a tidal disruption event, or TDE.