Long ago, before galaxies formed into shapes we are familiar with today and before planets formed, the earliest stars ignited ...

Physicists have taken the Universe’s temperature, revealing the searing trillion-degree heat of the Big Bang’s first plasma.

A new theory claims dark matter and dark energy don’t exist — they’re just side effects of the universe’s changing forces. By ...

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 ...

Learn what a black hole is, how it forms, and how astronomers detect it. Understand the science behind black holes and their ...

German astronomer Johannes Kepler (1571-1630) once hypothesized that the universe began on April 27, 4977 B.C., according to History.com. The Big Bang theory did not develop until the 20th century, ...

The universe's first galaxies were hot messes, according to a recent study. During their younger days, they were wild, ...

Before atomic elements came together, less than a second after the Big Bang, if particles condensed into halos of matter, ...

Monster black holes entered the cosmic scene soon after the Universe’s birth and grew rapidly, reaching millions or even ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." It is now thought that water first formed in space only 100 to 200 million years after the Big ...