Going straight up is hard. It takes a lot of energy. For those of us who enjoy hiking, cycling or running, hills are the bane ...

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Chemical fuel is nasty stuff to squishy, vulnerable flesh sacks called humans, from the noxious, flammable vapor of gasoline to the pungent stench of diesel that permeates for hundreds of yards in ...

Nitrous oxide’s high-speed abilities don’t end with racing cars, as it’s a powerful enough oxidizer to be a practical component of rocket propellant. Since [Markus Bindhammer] is building a hybrid ...

Solid-fuel rockets are the dream weapons of military rocketeers. They have no pumps or valves to go wrong and are always ready to fire. Their big trouble is that they are harder to control than liquid ...

We're talking 2,326 °C (4,220 °F), with highly reactive superheated hydrogen gas thrown into the bargain. Any conventional nuclear fuel would have trouble standing up to that but what the rocket ...