Astronomers have uncovered a vast cloud of energetic particles—a "mini halo"—surrounding one of the most distant galaxy clusters ever observed, marking a major step forward in understanding the hidden ...

Somewhere between 50 to 1 billion years after the Big Bang, our universe experienced something known as Cosmic Dawn. This was the time period in which the very first stars, black holes, and galaxies ...

Astrophysicists find the birth sites of gigantic elliptical galaxies which they say gives new clues about how they were formed. The galaxies look like bulging footballs and how they were created ...

A new study suggests that during a potential phase of primordial matter domination, particle interactions may have led to the formation of the universe’s first compact cosmic objects. Less than a ...

Members of the Case Western Reserve University community are invited to hear from Kelsey Johnson, professor of astronomy and director of the Echols Scholars Program at the University of Virginia, at ...

"We were surprised that water could actually form so early on — even before the birth of the first galaxies." When did life as we know it first emerge in the universe? We don’t know for sure, but the ...

Scientists today are quite sure about how long our universe has existed: it’s been 13.8 billion years, give or take 59 million years, since the cosmos burst into being via the big bang. But they’re ...

This stunning image reveals a distant galaxy cluster teeming with energy: galaxies shine in visible light (white), ghostly red clouds unveil a newly discovered radio mini-halo—the most distant ever ...