Bohr's theory that electrons existed in set orbits around the nucleus was the key to the periodic repetition of properties of the elements. The shells in which electrons orbit have different ...

One of U-Turn Audio’s selling points is ease of setup. The Orbit Theory continues this tradition, arriving largely assembled, with the cartridge expertly pre-installed. After popping the platter ...

Changes in Earth's orbit have helped pace climatic change for millennia. Scientists are now trying to understand whether - and how - these changes remodeled the landscapes our ancient ancestors ...