The European Planck Space Observatory revealed the universe is older than thought: 13.82 billion years old. See the role of the Cosmic Microwave Background here.

Astronomers have developed a new technique to detect the cosmic ultraviolet background radiation that keeps the universe ionized and hot. Their findings provide clues as to why astronomers observe ...

Astronomers have developed a way to detect the ultraviolet background of the universe, which could help explain why there are so few small galaxies in the cosmos.

As the universe expanded, Sutter says, the plasma cooled and eventually — after 10,000 years, a mere fraction of our universe's history — atoms of hydrogen and helium formed.

Scientists may have identified the gravitational waves that make up some of the universe’s background, not just those coming from unusual events like black hole collisions. New Atlas reports ...

Astronomers are trying to listen to the universe's background hum — a cascade of gravitational waves believed to exist since the first rapid inflation of space following the Big Bang over 13.8 ...

Together, ACBAR and another high-resolution, ground-based device, the Cosmic Background Imager in Chile, “have started a new chapter in microwave-background research,” says Max Tegmark of the ...