In 1992, three physicists began an argument about how many numbers we need to fully describe the universe. Their surprisingly ...

If the universe is expanding, then what is it expanding into, and what is it expanding from? Where's the edge of the universe ...

In a groundbreaking studypublished in the Monthly Notices of the Royal Astronomical Society, astronomers have uncovered a puzzling cosmic observation that challenges our understanding of the ...

Scientists using a global array of radio telescopes have detected the universe’s lowest-mass dark object by observing how it ...

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

IT IS ONE of the biggest mysteries in cosmology—and getting bigger all the time. Ever since Edwin Hubble, an American astronomer, published observations of distant galaxies in 1929, scientists have ...

A neutrino sensor array, ARCA, lines the Mediterranean seafloor near Sicily. A physicist took ARCA’s first huge win to a warm audience at the Neutrino 2024 conference. The highly energetic neutrino ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and that black holes appeared later. But some have proposed that it went the other ...

Astronomers have discovered the oldest and most distant black hole — a behemoth that likely formed at the dawn of the universe, more than 13 billion years ago. The black hole lies at the center of a ...