AP photographer Efrem Lukatsky has visited the Chernobyl power plant and the highly contaminated zone dozens of times since a 1986 reactor explosion caused the world’s worst nuclear accident. He ...

June 27, 1954, marked the beginning of the nuclear energetics history. The Soviet Union achieved a milestone in energy production, by launching the world's first nuclear power plant at Obninsk ...

The Soviet Union became a gerontocracy in its final years, contributing to its collapse. Historians say it's a cautionary tale for the US, whose leaders have been in power for decades. One Soviet ...

The Ukrainian Parliament on Tuesday passed a contentious bill allowing the government to purchase two unused, Russian-made nuclear reactors from Bulgaria for at least $600 million — a project ...

Summary: The Alfa-class submarine, developed by the Soviet Union during the Cold War, was an innovative but problematic vessel. Its titanium hull and unique lead-bismuth-cooled reactor allowed it ...

As the Soviet Union disintegrated, Thomas L. Neff came up with an improbable idea. What if Soviet nuclear warheads could light up American cities rather than obliterate them? What if the United ...

Russia’s bombardment of Ukraine could trigger a Chernobyl-like event. Here’s why In 1986, a nuclear calamity that helped bring down the Soviet empire began in Ukraine. Could it happen again?

Soviet-designed Ignalina could be the first graphite-moderated reactor plant to be dismantled, making it an important test bed for methodologies that could be used to decommission the U.K.'s ...

A declassified Cold War-era file from the CIA has gone viral over its coverage of a supposed clash between Soviet soldiers and a UFO, whose passengers reportedly turned the troops to stone before b… ...

In the early morning hours of April 26, 1986, the Chernobyl Nuclear Power Plant in Ukraine (formerly part of the Soviet Union) exploded, creating what many consider the worst nuclear disaster the ...

Immediately after the accident the Soviet Union cordoned off the Chernobyl Exclusion Zone, an area with a 30-kilometer radius around the reactor complex. Access by people was severely restricted.