Planck's constant is one of the most important numbers in all of physics. It is, essentially, the ultimate guide to the quantum world. It tells us where quantum effects are important, the fundamental ...

Planck photon rocket drives --- which in theory could hit velocities equal to 99.999 percent the speed of light --- might eventually offer propulsion engineers a way to drastically reduce ...

If scientists found a fundamental particle with a mass above the Planck scale, they would need to revisit how they think about particle sizes. For the kind of research performed at the LHC, ...

In the quantum world, the universe plays by rules so strange that even its smallest building blocks often defy intuition. Now, a team of physicists from Rice University and Max Planck suggests ...

While this process, called quantum tunneling, is well documented, physicists haven’t been able to tell if it happens instantly or takes time, but now a team from the Max Planck Institute has an ...

Planck scales and beyond. Frans Pretorius and William East of Princeton University in the US want to better understand the dynamics of particle collisions at the super-Planck scale. Planck units are a ...

The highest energy conceivable for an elementary particle is the so-called Planck energy.With this energy, quantum mechanics changes the nature of gravity and gravitational interaction is as strong as ...

The Higgs boson — a particle thought to explain how other particles get their mass — is tiny, but it may not be the tiniest particle yet. Theories have long predicted the existence of even ...

A spacecraft that revealed details of the hidden tapestry of the infant cosmos has had its last hurrah. Scientists have unveiled the final result from the European Space Agency’s Planck ...