The universe appears to be fine-tuned for life to evolve.

A concept called “quantum entanglement” suggests the fabric of the universe is more interconnected than we think. And it also suggests we have the wrong idea about reality.

Astronomers observed 39 cosmic events that released gravitational waves over a 6-month period in 2019 — a rate of more than one per week. The bounty, described in a series of papers published on 28 October, demonstrates how observatories that detect these ripples — usually created by the merging of two black holes — have dramatically increased their sensitivity since the first identification was made in 2015.

Weird electron-positrons from decaying beryllium and helium hint at new boson.

In 1916, Albert Einstein published his theory of general relativity, which established the modern view of gravity as a warping of the fabric of spacetime. The theory predicted that objects that interact with gravity could disturb that fabric, sending ripples across it. Any object that interacts with gravity can create gravitational waves. But only the most catastrophic cosmic events make gravitational waves powerful enough for us to detect.

Black holes are great at sucking up matter. So great, in fact, that not even light can escape their grasp (hence the name).

Scientists have produced the firmest evidence yet of so-called sterile neutrinos, mysterious particles that pass through matter without interacting with it at all. The first hints these elusive particles turned up decades ago. But after years of dedicated searches, scientists have been unable to find any other evidence for them, with many experiments contradicting those old results.

Andrew Jaffe probes Carlo Rovelli’s study arguing that physics deconstructs our sense of time.

Hello darkness my old friend. By Mike McRae.

A laser-driven technique for creating fusion that dispenses with the need for radioactive fuel elements and leaves no toxic radioactive waste is now within reach, say researchers.

Think there’s no time like the present? Modern physics begs to differ. By Mark Shumelda.

In quantum systems, heat can flow “backward,” from cold to hot. By Emily Conover.

We're about to lift the veil to a new universe. By Brad Bergan.

By replacing black holes with fuzzballs — dense, star-like objects from string theory — researchers think they can avoid some knotty paradoxes at the edge of physics. By Jennifer Ouellette.

By reimagining the kinks and folds of origami as atoms in a lattice, researchers are uncovering strange behavior hiding in simple structures. By Marcus Woo.

What the existence of zombies would do to our philosophy of mind. By Sean Carroll.

Vibrations of a tiny cantilever could help reveal why quantum rules fail on large scales. By Emily Conover.

Light is pretty awesome. It's made of subatomic particles called photons, which also behave like waves. It's been demonstrated to act like both a particle and a wave simultaneously . Photons can be entangled at a distance . They reflect, refract...

Scientists aren’t yet certain that electrons and their relatives are violating the Standard Model of particle physics, but the evidence is mounting. By Jesse Dunietz.