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

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 ...

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

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

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

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

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

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

Record-breaking ultrafast outflow (UFO) winds from a supermassive black hole flung matter across the universe close to the speed of light.

A never-before-seen blast from a supermassive black hole was spotted by two sophisticated X-ray space telescopes. This giant ...

NASA’s Webb Telescope detects the earliest known supernova, GRB 250314A, 730 million years after the Big Bang, capturing its host galaxy and providing unprecedented early-universe observations.

X-ray space telescopes caught a supermassive blackhole flinging matter into space at a fifth of the speed of light ...