A Hall thruster is a high-efficiency propulsion device using plasma that is used for various difficult space missions, such as SpaceX's constellation satellites, Starlink and NASA's asteroid probe, ...

Donald Trump’s efforts to undo diversity, equity and inclusion efforts throughout the federal government have had a ...

Priscilla Presley has spent most of her life in the orbit of popular culture’s most famous star. Now in the afterglow, she seems determined to make sure the story of Elvis Presley is not distorted by ...