While SpaceX lost the upper stage of its new Starship in a flight test, the futuristic spacecraft presages a spaceflight revolution, says a leading U.S. space scholar.

Republicans are sending signals that they might not back Trump’s nominee for director of national intelligence.

Washington Post staff tried to separate what is happening from what is not, and to explain what may happen in the future.

Now that President Donald Trump is back in the White House, Saudi Arabia hopes to play a greater role in the Middle Eastern ...

Moreover, Canada is closer to Greenland than Denmark and shares a land border on Hans Island. Existing ports, airfields and ...

Lockheed should benefit from recent and foreseeable increases in US defense spending, driven in the short term by orders to resupply munitions expended in Ukraine far faster than they can be made.

With distributed company-size attacks, Ukraine destroyed a battalion ... Moscow several million artillery shells, short-range ballistic missiles and other munitions. In return, Moscow has supplied ...

That mission, to launch ballistic missiles from under the ice ... That information can help see the size and shape of buildings and the size of the city, but they need to visit the site to ...

The widely reproduced map, created in 1569, suggests Greenland is roughly the same size as Africa when that ... nuclear intermediate range ballistic missiles (IRBMs) at the Soviet Union.

Hours after Donald Trump was sworn in as president, China’s Xi Jinping made a call to Russian President Vladimir Putin in which, according to the Chinese foreign ministry’s readout, the two leaders ...