While many scientists are looking into theoretical space engines, others are focusing on the tried and true—such as plain old-fashioned engines that burn rocket fuel. In this new study ...

the engines will have been in operation for 50,000 hours and will only have used 425 kilograms of xenon gas. Each kilogram of fuel will then have produced 10 times as much thrust as a kilogram of ...

This story has been changed to clarify that it is the world's largest single-segment solid rocket. China says it fired up the world’s largest single-segment solid-fuel rocket engine for the ...