When we look at the world around us, all that we see is thanks to light. It reflects, refracts, and interacts, carrying shape ...

Researchers from the University of Arizona, working with an international team, have captured and controlled quantum ...

Planck's constant reveals the quantum world's fundamental energy levels. It shows how light and matter exist in discrete units (quanta). This constant defines limits to our knowledge of particle ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...