Answering questions about the universe Q13The age of the universe is estimated to be about 13.8 billion years. One of the ...

More than 100 years ago, Albert Einstein proposed something radical in his theory of general relativity: space and time are not fixed backdrops. They bend, stretch and ripple when massive objects move ...

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 that the ...

The "afterglow" of the universe is an important piece of evidence for the Big Bang. This background radiation also provides important answers to the question of how the first galaxies were able to ...

The Big Bang is often presented as if science has completely solved the beginning of the universe: everything started in one unimaginably hot, dense state, expanded outward and eventually became the ...

Astronomers say the universe’s background glow is twice as bright as previously thought. NASA’s New Horizons spacecraft discovered the unexpected anomaly when it observed a dark region in space with ...

So much happened in the earliest moments of the universe. Elementary particles appeared, the first nuclei of hydrogen and helium, and fluctuations of energy and matter set into motion the formation of ...

The earliest light in the universe has been traveling across space since just after the Big Bang. Known as the cosmic microwave background, it is imperceptible to the human eye. But if scientists can ...