A new study challenges the traditional interpretation of the cosmic microwave background, this fossil light from the Big Bang ...

A never-before-seen image of the cosmic microwave background, combining data from the Atacama Cosmology Telescope (ACT) and the Planck satellite, offers a high-definition view of the early Universe.

Part of the reason scientists have settled on the Big Bang theory as the best explanation of how the Universe came into being ...

Team led by UChicago scientist Wendy Freedman using James Webb Space Telescope finds no evidence of tension in Hubble ...

Scientists have long puzzled over a discrepancy in how fast the universe is expanding, but new, sharper data from the James Webb Space Telescope may finally be solving the mystery. By refining ...

One of the Holy Grails in cosmology is a look back at the earliest epochs of cosmic history. Unfortunately, the universe's first few hundred thousand years are shrouded in an impenetrable fog.

Dark matter may have started as light-like particles that abruptly became heavy—a cosmic twist rooted in spin and ...

Researchers propose a new theory for the origin of dark matter, the invisible substance thought to give the universe its ...

For 75 years, scientists have consistently pondered the Fermi Paradox, which asks why we don’t hear from other civilizations ...

But when scientists peer very far back, they find conundrums. JWST observations of the distant past are at odds with ...

Researchers have an explanation for how dark matter emerged - beginning with weightless particles and ending with massive ...

Dartmouth researchers propose a novel theory suggesting dark matter originated from high-energy, massless particles in the ...