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 ...

Astrophysicist Neil deGrasse Tyson joins Natasha Verma to unlock big cosmic questions with wit and clarity: Have aliens ...

Most explanations rely on "dark energy" to explain the Universe's accelerating expansion rate, but a new study takes a different path.

Dark energy, the invisible force making up 70% of the universe, accelerates cosmic expansion and could one day cause the “Big ...

How could the principle of "radical mundanity" proposed by the Fermi paradox help explain why humans haven't found evidence ...

Such an exponential expansion may seem minor, but it is equivalent to a grape in the palm of your hand swelling to become ...

Physicists propose that tangled cosmic “knots” formed after the Big Bang may explain why our universe is made of matter, not ...

Hubble’s updated view of NGC 3370, richer in light and detail than ever before, deepens our understanding of both the galaxy and the cosmos itself. This new Hubble Picture of the Week highlights a ...

Theorists have found that a “warm” version of cosmic inflation is consistent with known physics, linking it to the hunt for ...

Dark energy, the mysterious phenomenon that powers the expansion of the universe, may undergo periodic 'violent transitions' ...

the measured rate of the Universe’s expansion — a key parameter in cosmology since its introduction in 1929. Incidentally, the Hubble constant is not constant. Because the inverse Hubble constant ...