A Russian official said Moscow is ready to respond with military measures if the United States deploys its missile defense ...

The last remaining nuclear arms pact between Russia and the United States is set to expire this week, removing any caps on the two largest atomic arsenals for the first time in more than a ...

Ukrainian President Volodymyr Zelenskyy says Russia breached its commitment to hold off on energy infrastructure attacks for a week when it launched a major assault on Ukraine overnight.

The agency did not complete a practice countdown for a mission that would be the first to send people around the moon in more than 50 years.

START was signed in 1991, ending Cold War’s nuclear standoff and introducing unprecedented verification regime - Anadolu Ajansı ...

There is now a $2 fee to toss coins into Rome’s Trevi Fountain — but some tourists are ignoring the new rules altogether. A ...

Greenland's geographical location provides no added benefit to a space-based architecture of interceptors and sensors for US ...

The Lunar Gateway is a planned space station that will orbit the moon. It is part of the NASA‑led Artemis program. Artemis ...

KYIV, Ukraine (AP) — A new round of U.S.-brokered talks on ending Russia’s war on Ukraine is set to go ahead this week after ...

Efforts to halt Russia’s use of the Starlink internet system to guide its drones for attacks on Ukraine have produced “real results,” Ukraine’s defense minister Mykhailo Fedorov said on Sunday.

Plasma engines could be the future of human space travel, and Russia’s “manetoplasma rockets” have the most ambitious travel goals ...

Artemis II echoes the Apollo-era missions that paved the way for the first moon landing — and sets the stage for what comes ...