Weirdly, spaceships have no direct way to gauge their own speed. Luckily, we can use some physics tricks to figure it out.

Modern physics suggests distance may emerge from motion, gravity and quantum entanglement, not exist as a basic fact. (CREDIT: NASA, ESA, Z. Levay and R. van der Marel/STScI, T. Hallas, and A.

Shirts are full of curves—collars, cuffs, sleeves—but sewing machines operate in straight lines. Engineers opted to replace ...

A photon emitted from a star a billion light-years away arrives at a telescope having experienced no time whatsoever. Not ...

Submarines operate for weeks or months beneath the ocean surface, cut off from the satellite signals that guide nearly every ...

Hickory Canyons Natural Area near New Offenburg is Missouri’s worst-kept secret that somehow remains a secret anyway, which ...

Gravity, as most people understand it, is the familiar force that pulls a falling apple toward Earth. But for astronomers and ...

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

A team of physicists has pushed the limits of quantum control by cooling the rotational motion of a nanoscale object to its ...

A comprehensive new study combines decades of research to reveal that we're missing an essential component in our ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

Yet, by one important measure, China’s global heft is shrinking. In dollar terms, China’s gross domestic product, as a share of the global economy, peaked in 2021 at around 18.5%, when it grew to be ...