An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter ...

By the middle of the twentieth century we’d understood how chemical elements were made up of protons, neutrons and electrons.

An atom consists of positively charged protons, neutrally charged neutrons and negatively charged electrons. AG Caesar/Wikimedia Commons, CC BY-SA ...

Why did they form at that time? Astronomers know from observing distant exploding stars that the size of the universe has been getting bigger since the Big Bang. When the hydrogen and helium atoms ...

Three plutonium -based nuclear weapons tests were conducted at the Montebello Islands in the 1950s, which introduced radioactive contamination to the surrounding environment.

As AI pushes up electricity demand, big tech is turning to nuclear energy for clean, reliable energy that keeps the digital world running 24/7. Supercomputing and artificial intelligence (AI) are ...

The atomic nucleus is a quantum many-body system composed of protons and neutrons. Synthesizing and studying new nuclides is a frontier research topic in nuclear physics. Through this research ...

Only 0.72% of it is uranium-235 with 92 protons and 143 neutrons (the remaining 0.01% are other isotopes). For nuclear power reactors or weapons, we need to change the isotope proportions.

Environment Researchers warn of dangerously high levels of plutonium “fallout” detected in Montebello Islands Contamination from the little-known ‘Operation Hurricane’ will remain for ...

When uranium is mined from the earth, almost all of it—about 99.27%—is a type called uranium-238, which has 92 protons and 146 neutrons. A very small amount—only 0.72%—is uranium-235 ...