Deep in the heart of the matter, some numbers don't add up. For example, while protons and neutrons are made of quarks, ...

For more than a century, physicists have suspected that the familiar three dimensions of space might be only a small slice of ...

We can't see dark matter directly, so studying it pushes the boundaries of our creativity as scientists. How exciting, says ...

In 1929, Edwin Hubble discovered from observations of distant galaxies that the Universe was expanding. This baffled astronomers and the public alike. Then in 1998, another wrinkle: Two different ...

Dark matter is understood to interact “feebly” with the visible universe, but was that always true? Physicists have modeled the inflaton—a theoretical space scientists use to examine the period ...

Scientists debate whether this object is the brightest in the visible universe, as a new study suggests. By Dennis Overbye Astronomers claimed on Monday that they had discovered what might be the ...

The Universe is big, as Douglas Adams would say. The most distant light we can see is the cosmic microwave background (CMB), which has taken more than 13 billion years to reach us. This marks the edge ...

A few hundred million years after the Big Bang, a thick fog of hydrogen gas shrouded the newborn universe in darkness. Stars had begun to form in the densest clumps, but the surrounding gas muffled ...

Humans have long gazed at the night sky for answers about the universe. Now, SpaceX’s second-generation Starlink V2-mini satellites are emitting 32 times more radio interference than earlier versions, ...