Scientists have confirmed that colossal collisions between galaxies trigger titanic eruptions in the centers of those ...

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

Supernovae aren't one of the JWST's main science themes, but the perceptive telescope is full of surprises. Recently, it ...

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

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

Until recently, Type Ia supernovae have been treated by cosmologists as the gold standard of cosmic distance determination: quite uniform “standard candles” whose peak brightness was reliable over all ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

Everything humanity has ever touched, measured, or imagined as “normal” matter is a tiny sliver of reality. Less than 5 ...

Data from the James Webb Space Telescope has identified the universe’s most ancient supernova to date. This milestone not only redefines astronomical records but clarifies how the universe’s first ...

A faint, ancient flash of light detected by the James Webb Space Telescope (JWST) has broken the record for the most distant ...

A sudden black hole flare unleashed stunning, near light speed winds that echo the Sun’s most powerful eruptions.

Astronomers are a step closer to cracking one of the secrets of dark energy—the mysterious force believed to be causing the universe's accelerated expansion.