New research out this month has led to speculation that the acceleration of the expanding universe might not be real after all. So what's really going on? By Tamara Davis.

Researchers have created a 3D printed cosmic microwave background - a map of the oldest light in the universe - and provided the files for download.

You might have read otherwise in some headlines lately, but don't be misled. By Dan Scolnic and Adam G. Riess.

Time doesn’t just exist “out there” ticking away from past to future, but rather is an emergent property that depends on the observer. By Robert Lanza.

A correlation between normal matter and the observed rotation suggests that maybe dark matter isn’t a certainty, after all. By Ethan Siegel. (Oct. 6, 2016)

Births, deaths, and other time travel paradoxes. By James Gleick.

Professor Brian Cox is advanced fellow of particle physics in the School of Physics and Astronomy at the University of Manchester. He is about to embark on a nationwide tour to promote the ideas in his new book, Universal: A Guide to the Cosmos.

How is it possible to get something from nothing? By Amanda Gefter.

What looks at first glance like an opening up of possibilities is actually an attack on the human imagination. By Sam Kriss.

Physicists want equations that connect behaviors directly to the foundations of reality. With the continuity equation, they actually pull it off. By Brendan Cole.

Physicists are confronting their “nightmare scenario.” What does the absence of new particles suggest about how nature works? By Natalie Wolchover.

Another blow to hopes of new physics beyond the Standard Model. By Xaq Rzetelny.

Physicists working at the Large Hadron Collider reveal that mounds of data did not support the possibility of a new particle. By Dennis Overbye.

Astrobiologists will probably have their hands full in a few trillion years. The odds of life evolving throughout the universe are 1,000 times greater in the far future than they are now, according to a new modeling study. The finding suggests that life on Earth may be "premature" in the cosmic scheme of things, researchers said. "If you ask, 'When is life most likely to emerge?' you might naively say, 'Now,'" study lead author Avi Loeb, of the Harvard-Smithsonian Center for Astrophysics, said in a statement. "But we find that the chance of life grows much higher in the distant future."

Could the secret to understanding gravity be held in reducing, not increasing, the number of dimensions? By Sabine Hossenfelder

Somewhere, in the deepest reaches of the cosmos, far from the safe confines of our home galaxy, the Milky Way, lies a monster. Slowly, inevitably, it is pulling. Over the course of billions of years, it draws us and everything near us closer to it. The only force that acts over such immense distance scales and through cosmic periods of time is gravity, so whatever it is, it's massive and unrelenting. We call it the Great Attractor, and until recently, its true nature has been a complete mystery. Note that it's still a mystery, just not a complete one.

A hint that neutrinos behave differently than antineutrinos suggests an answer to one the biggest questions in physics. By Natalie Wolchover.

According to our best theories of physics, the universe is a fixed block where time only appears to pass. Yet a number of physicists hope to replace this “block universe” with a physical theory of time. By Dan Falk.

A new explanation for the something that is nothing.

The origin of quantum noise is the modern incarnation of a millennia-old debate. By George Musser.