The universe may not be infinite or flat. Physicist Glenn Starkman ... resembling a hyperdimensional doughnut. The cosmic microwave background (CMB)—a faint remnant of the Big Bang—shows ...

A faint cosmic spin – one rotation per 500 billion years – could resolve the stubborn Hubble tension by tweaking standard ...

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

The CMB represents the first stage in the universe's history that we can see—effectively, the universe's baby picture. The new images give a remarkably clear view of very, very subtle variations ...

Tiny variations or "wrinkles" were "frozen into" the CMB by fluctuations in the density of matter in the early universe called baryon acoustic oscillations (BAO). As the cosmos continued to expand ...