The USS Nautilus was the world's first nuclear-powered submarine. It participated in scientific and military operations ...
The U.S. military's classified mini space shuttle has returned to Earth after circling the world for 434 days.
Sierra Space and Radian are developing spaceplanes that fly at hypersonic speeds, but are able to head into Low Earth Orbit ...
British police said on Friday that they have charged the Russian captain of a container ship that crashed into a U.S. tanker ...
The historic, aging ocean liner that a Florida county plans to turn into the world’s largest artificial reef has completed ...