Periodic Table Day is celebrated every year on … well, we'll let you figure that out in the quiz just below! Plenty of folks have a fascination with the periodic table all year long.

It seems as if the makeup of the periodic table would be as rudimentary as apples falling down, not up. There’s evidence for elements like oxygen, iron, and silicon all around.

The periodic table contains an enormous amount of information, but some of the most important are atomic numbers, ... (how long it takes 50% of that element to decompose) ...

While the periodic table currently lists over 100 elements, scientists have long speculated about the possibility of discovering new elements, especially in extreme conditions that are difficult ...

Scientists have long been puzzled by its density, as the 34-mile-wide ... Nearby asteroid may contain elements 'beyond the periodic table', new study suggests : Read more ...

We explore if it's really possible that new elements exist beyond the periodic table. Adamantium, bolognium, dilithium. Element Zero, Kryptonite. Mythril, Netherite, Orichalcum, Unobtanium. We ...

Instead, they may be made of naturally occurring "superheavy elements" beyond those listed in the periodic table — our current best catalog of 118 chemical elements — new research suggests.