Dark-energy evidence suggests the universe will end in a “big crunch” roughly 20 billion years from now. The universe is nearing the halfway point of what may be a 33-billion-year lifespan, according ...

The ‘inflationary’ model of cosmology explains many large-scale features of the Universe as the result of a primordial period ...

The Universe might not exist forever. New observations by physicists indicate that it will one day reach its maximum size ...

Astrophysicists have presumed for nearly a century that the universe will just keep expanding for all eternity, driven by an invisible force called dark energy. But new data suggest that this is ...

Astronomers spent decades refining their data, slowly recalibrating the scale of the cosmos ... Microwave Background (CMB), the cooled afterglow of the Big Bang itself, a relic from when the universe ...

The birth of the universe has been a question that has puzzled scientists for centuries. In a groundbreaking study published ...

Researchers have unveiled a new model for the universe’s birth that replaces cosmic inflation with gravitational waves as the ...

No one knows what kicked off the Big Bang that eventually allowed the stars to begin forming. Adolf Schaller for STScI, CC BY How can a Big Bang have been the start of the universe, since intense ...

It will be a view unlike any other — completely invisible, exceptionally quiet and utterly transformative. Deep in the first moments of the Big Bang, the entire cosmos shook and rumbled. Those quakes ...