In an unprecedentedly precise accelerator experiment, researchers directly observed how some of the heaviest known elements ...

The periodic table captures a subtle pattern that runs through the chemical elements , the fundamental building blocks of everything around us: from the aluminium in bike frames to the xenon gas ...

In other words, it contains elements not on the periodic table at all. These elements would be stable around atomic number 164, which is far denser that Osmium, the densest known naturally ...