Vivian Poulin asks if the tension between a direct measurement of the Hubble constant and constraints from the early universe ...

Primordial black holes are the earliest black holes thought to exist, and they vanished almost as fast as they came into ...

A major international research effort has confirmed the standard model of cosmology using data from 41 million galaxies. The ...

If dark energy continues to weaken, the accelerating expansion of the universe could slow — and possibly reverse. In that ...

Astronomers have released the clearest and most detailed images ever of the universe when it was just a baby—only 380,000 ...

New research suggests that the theoretical Hawking radiation generated by black holes may have influenced the early structure ...

Not everything we knew about the universe is wrong. But not not everything. The Dark Energy Spectroscopic Instrument (DESI) ...

Elusive black hole radiation predicted by Stephen Hawking may have influenced the way the universe took shape after the Big ...

One of the Holy Grails in cosmology is a look back at the earliest epochs of cosmic history. Unfortunately, the universe's ...

Stephen Hawking's 1966 PhD thesis, Properties of Expanding Universes, laid the groundwork for his renowned contributions to ...