Russia is testing the combat readiness of a unit equipped with Yars intercontinental ballistic missiles in a region northwest ...

Constellation Energy is asking the Nuclear Regulatory Commission on Oct 25 to change the name of Three Mile Island, nearly 50 ...

The 2010 New START U.S.-Russian arms reduction treaty, the last remaining arms control pact between Moscow and Washington ...

Oddball Stellar Duo Creates Spectacular Fireworks Located about 700 light-years from Earth, R Aquarii is one of the closest stars known to undergo massive violent eruptions that spew out huge ...

Zelensky seeks to convince Western allies to back his plan as more than 160 clashes reported along front line of war ...

Each deal supports the development of small modular reactors (SMRs), which can be one-tenth to one-quarter the size of a ...

On the 60th anniversary of the nation’s first atomic weapon test, experts trace how policy, politics and purpose laid the ...

With its latest missile test, China displays a growing confidence in its nuclear arsenal. It also offers an opportunity for ...

NASA's Hubble Space Telescope has provided a dramatic and colorful close-up look at one of the most rambunctious stars in our ...

Fusion is developing fast and gaining momentum as a climate solution. It has the potential to generate four times more energy per kilogram of fuel than nuclear fission, and nearly four million times ...

Almost certainly that includes the United States’ plan to upgrade its nuclear arsenal with more powerful, more accurate nuclear warhead delivery systems, as well as new tactical nuclear warheads and ...

As Israel expands war into Lebanon, politicians in Tehran argue that acquiring a nuclear bomb is their last chance to achieve ...