Reference The universe was born with the Big Bang as an unimaginably hot, dense point. SPACE.com offers an overview of the universe and its history, age and structure.
Big Bang theory is the leading explanation for how our universe began. According to the theory, the entire universe began as a tiny singularity that went through an explosive expansion 13.8 billion years ago, gradually expanding into the cosmos we see today. Today, astronomers can detect an "echo" from the Big Bang in the cosmic microwave background, a phenomenon that can be detected with radio telescopes. Big Bang Theory is also the name of a popular CBS sitcom about scientists, where several real-life scientists and astronauts have appeared.
The world could end not with a bang, but with a quantum vacuum decay of the ground state of the universe to its true minimum.
The elements around some giant black holes may be subtly different from the cosmic average, retaining a relic memory of the young universe.
A new theory suggests dark matter may have come from quantum bags that got squished together in the early universe.
You may have heard about the "cosmology crisis:" Different methods of measuring the age of the universe are giving different results, and cosmologists have no idea why.
The earliest and most momentous epoch in the history of the universe released a flood of gravitational waves, tiny ripples in the fabric of space-time.
Astrophysicists say our universe might be shaped like a three-dimensional donut, meaning you could point a spaceship in one direction and eventually return to where you started.
Why is the universe the way it is? Over the years, scientists have explored many ways to explain the cosmos, leading to some crazy-sounding ideas.
Understanding the 'undetectable' cosmos could lead to significant changes in some highly cherished theories about space-time.
Scientists have recreated the first matter that appeared after the Big Bang in the Large Hadron Collider.
This week on the forums, the community takes on the concept of nothingness. We also discuss spinning in space and try a fun quiz!
For decades, cosmologists have wondered if the large-scale structure of the universe is a fractal — that is, if it looks the same no matter how large the scale.
Space.com caught up with Greene to discuss the importance of science education, why black holes are so interesting and whether a "theory of everything" breakthrough could be on the horizon.
Believe it or not, physicists are attempting to understand the universe when it was only a handful of seconds old.
Cosmologists simulated 4,000 versions of the universe in order to understand what its structure today tells us about its origins.
Scientists have spotted the first evidence of a rare Higgs boson decay, expanding our understanding of the strange quantum universe.
A new study on the rotation of the universe's first light could suggest physicists need new rule-breaking subatomic particles