He even managed to estimate the relative weights of the different atoms. List of elements ... suggested 2,000 years earlier – that matter is made of indivisible particles in constant motion.

If matter was ultimately indivisible, if it was made of atoms ... was that if atoms really existed, they were way, way too small to see. How could you prove the existence of something you couldn ...

Sponsor Message Although the modern concept of atoms is quite different from that of the pre-Socratic Greeks, the notion that matter is made up of small, indivisible bits remains alive and well ...

Atoms are made up of a nucleus, protons and electrons. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Atoms are the basic units of matter.

Decades ago, astronomers estimated that “ordinary” matter (basically everything that isn’t dark matter or dark energy) makes ...

The big idea of atomic theory is that, at some smallest, fundamental level, the matter that makes up everything ... we've found that molecules are made of atoms, which are made of protons ...

Air, water, bacteria, humans, computers, the stars: all of them are made from atoms. In fact, the atoms that make up Earth (and everything on it, including us), originally came from the stars, which ...