If not in visible stars and galaxies, the most likely hiding place for the matter is in the dark space between galaxies.

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 ...

Cosmic inflation tries to describe one brief but crucial phase in the Big Bang that launched the universe onto its expansion course. Many textbooks and science educators have attempted to describe the ...

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 ...

"Icarus," located in a remote galaxy in Leo, is the most distant star yet seen. It lies more than halfway across the visible universe. NASA / ESA / P. Kelly, Univ. of Minnesota We've got a new ...

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 ...

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 ...

How to envision travel across the Visible Universe and beyond.<BR><BR>Space is big ... everyone knows that.<BR><BR>Consider your wardrobe. 2 metres high, 2 metres wide, 1/2 a metre deep. 2 cubic ...

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 ...