Chinese engineers identify a design flaw in NASA's lunar nuclear reactor, suggesting improvements that could boost efficiency ...

Since the first nuclear explosion in history during the Trinity test in 1945, nuclear weapons have significantly shaped the ...

but uranium 235 enrichment nonetheless. Uranium machines needed a moderator, a substance that would slow down the neutrons liberated by chain reactions. In the end, the project decided to use ...

But the neutrons are much more likely to trigger ... It either must be enriched—made more concentrated in a rare form of uranium (U-235)—or converted into plutonium (Pu-239).

T here is a fairly popular idea circulating the Internet that a single gram of uranium contains about 20 billion calories, with some joking that eating it could sustain you like a turbo-charged diet ...

Nuclear fission reactors struggle with two key problems: poor fuel utilization and complicated radioactive waste handling. To ...

There are some potentially valid criticism about the Nuclear Salt Water Rocket (NSWR). The criticisms highlight real physical ...

Uranium has two main naturally occurring isotopes - uranium-235, with 92 protons and 143 neutrons, and uranium-238, with 92 protons and 146 neutrons. Those three neutrons make a huge difference.

The neutrons then hit other atoms, which break apart, and the reaction continues. When uranium-235 decays naturally, one of its byproducts is a free neutron, which is why it could spur the ...

This makes the resulting thermal (‘slow’) neutrons fall right within the neutron cross section for U-235 and a few other ... makes up a large percentage of uranium fuel. In addition to these ...