Why did they form at that time? Astronomers know from observing distant exploding stars that the size of the universe has ...

Protons are tiny particles just a femtometer across, but without them, atoms wouldn't exist. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

The journey of the elements starts in the earliest moments of the Big Bang, when our universe was only a few seconds to a few minutes old. When you purchase through links on our site, we may earn an ...

The “lead” of a pencil is actually made of a substance called graphite which is made of carbon atoms. The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and ...

Scientists are holding up a 'mirror' to protons and neutrons to learn more about the particles that build our visible universe. The MARATHON experiment has accessed new details about these particles' ...

The interactions of the quarks and gluons that make up protons and neutrons are so strong that the structure of protons and neutrons is difficult to calculate from theory and must be instead measured ...

Billions of times each minute, the Large Hadron Collider (LHC) smashes protons together, unleashing a maelstrom of energy that crystallizes into more protons, neutrons, and less familiar cousins of ...

OAK RIDGE, Tenn. — Examining the smallest parts of the universe often takes the biggest kinds of equipment. At Oak Ridge National Laboratory, a unique piece of equipment the size of a building is ...

Free neutrons in Oak Ridge. They are drawing hundreds of scientists from all over the world to the High Flux Isotope Reactor (HFIR) and Spallation Neutron Source (SNS) at Oak Ridge National Laboratory ...