Trump's comments last month sparked fears of a new nuclear arms race and concerns major powers would restart full testing.

The central Asian country, which has had relations with Israel for decades, has long sought the repeal of a Cold War-era law ...

In a stunning moment of space history, a Soviet probe sent back the first-ever close-up images of Venus' mysterious surface.

In 1959, the Soviet Union displayed one of its lunar probes on tour—but the CIA used the opportunity to secretly disassemble, photograph, and reassemble the craft in just 24 hours. What the Soviets ...

A small band of explorers are cracking into the radioactive mines where the Kremlin once used slave labor to dig out its ...

As humans began to explore outer space in the latter half of the 20th century, radio waves proved a powerful tool. Scientists could send out radio waves to communicate with satellites, rockets and ...

Radio astronomy opened up the universe for scientists. They could map new elements across galaxies and also search for ...

Deep in the Arctic, Pyramiden stands untouched — a perfectly preserved Soviet ghost city abandoned overnight in 1998. Once a model mining town run by Moscow, it now lies frozen beneath Svalbard’s ...