This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

Physics of drag forces in calculating the L1 Lagrange point and understanding how non-gravitational forces influence precise orbital positioning. Learn how drag, solar radiation pressure, and other ...

Physicists are quietly rewriting the rulebook for how we might cross the gulf between stars, not by bolting bigger rockets to launch pads but by probing the strange limits of quantum theory. A new ...

Recent theoretical advances have underscored the significance of momentum space geometry in the realm of relativistic physics. Traditional notions of flat momentum space are being re-evaluated in ...

Decadal surveys of the National Academies of Sciences, Engineering, and Medicine bring together leading experts to identify a field’s most compelling science challenges and frontiers for the next ...

A novel theory of 'wavy space-time' suggests that the division between our best descriptions of the universe on its smallest and largest scales may be because gravity does not play by quantum rules.

The Committee on Solar and Space Physics (CSSP) provides an independent, authoritative forum for identifying and discussing issues in solar and space physics with the research community, the federal ...

What if, just before we reach the bottom, we find out that reductionism fails? Big things are made of smaller things, and those smaller things are made of smaller things still. That’s reductionism in ...

Proof-of-principle experiment resolved the shock waves produced by the Shenzhou-15 module when it re-entered the atmosphere ...