Only about 5% of the universe is composed of normal matter that we can directly observe, while the remaining 95% is widely ...

In quantum physics, objects can exist in multiple states at the same time—a phenomenon known as quantum superposition, where ...

In quantum mechanics, particles do not behave like everyday objects. Instead of existing in one clearly defined state, they ...

A key question in physics is whether gravity follows quantum rules, but testing this is difficult because gravitational ...

For the first time, scientists have observed quantum entanglement in the momentum of massive particles. The result, decades ...

A new study suggests that certain 'quantum collapse models'—which posit that wavefunction collapse happens spontaneously—could be tied to gravity, introducing a tiny intrinsic uncertainty in time ...

Physicists have long suspected that there is a layer of physical reality beneath quantum theory and a new mathematical model ...

Quantum mechanics has always carried a quiet tension. At its core, the theory allows particles to exist in many states at once, described by a mathematical object called a wavefunction. Yet daily life ...

Two recent studies explore whether time can exist in quantum superposition and how gravity might affect its measurement. One proposes using advanced ion clocks to detect quantum states of time, while ...

Atomic clocks are already precise enough to measure tiny effects of relativity, such as time dilation; for example, if you ...