Scientists have been building nuclear weapons for more than 80 years, but crafting this technology remains a challenge.

Nuclear Salt Water Rocket (NSWR) is a rocket that uses known physics and engineering and there are versions that could reach ...

By the end of the year the physicist Werner Heisenberg had calculated that nuclear fission chain reactions might be possible. When slowed down and controlled in a "uranium machine" (nuclear ...

In nuclear fission, atoms such as U-235 or Pu-239 split when a neutron hits them, releasing energy in the form of heat (along with more neutrons that can continue the chain reaction). This heat ...

Reports suggest the justices are favoring Texas, though a ruling in the state’s favor could counter its recent efforts at ...

Most new nuclear fission reactors being built today are of the light water reactor (LWR) type, which use water for neutron moderation into thermal neutrons as well as neutron capture. While ...

Yet despite improvements in the design of nuclear-fission reactors ... but requires a chain reaction for the reactor to remain self-sustaining. By comparison, a fusion reactor generates an ...

It's this chain reaction that makes nuclear weapons so devastatingly powerful ... crews recovered only the "primary" fission section. The "secondary" fusion section was left in the ground ...

After confirming that the reactor has reached a critical state where nuclear fuel is sustaining a fission chain reaction, the reactor will start generating electricity as early as Nov. 7.

Watch the animation and compare the fission of nuclei to ... moderator rods would have on the nuclear reaction. Calculate the next radioactive element in a chain reaction by reviewing how many ...