Is the big bang, and all that came from it, a holographic mirage from another dimension?
Black holes may be bubbles devoid of space and time—and encased in “firewalls” that confound both general relativity and quantum mechanics
Astronauts already skip ahead in time, but the laws of physics seem to forbid going backward—or do they?
Newly discovered lobes stretch tens of thousands of light-years above and below the Milky Way's disk. Where did they come from?
Dozens of particles from halfway across the universe have landed in the IceCube experiment. These messengers could help answer some long-standing cosmic conundrums
The Dark Energy Survey is examining distant galaxies to figure out why space is expanding at an ever faster pace
Super Powerful X-Ray Laser Boils Atoms in Molecules and Explodes Living Cells--All in the Name of Science
What started as a Star Wars idea for a 1980s-era antimissile weapon is now a microscope of unprecedented power, able to create exotic forms of matter found nowhere else in the universe
The invisible dark matter particles that dominate the universe may come in strange and varied forms
Proof of parallel universes radically different from our own may still lie beyond the domain of science
Imagine if space were 2-D rather than 3-D. How would the force of gravity work? The surprising answers are guiding physicists to a unified theory of nature
Physicists speak of the world as being made of particles and force fields, but it is not at all clear what particles and force fields actually are in the quantum realm. The world may instead consist of bundles of properties, such as color and shape
A new version of quantum theory sweeps away the bizarre paradoxes of the microscopic world. The cost? Quantum information exists only in your imagination
Quantum mechanics is not just about teeny particles. It applies to things of all sizes: birds, plants, maybe even people
The laws of physics may well prevent the human brain from evolving into an ever more powerful thinking machine