Eco-friendly alternatives to fossil fuels are venturing beyond Earth—and into space.

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 ...

which is used to manufacture a key component of solid rocket fuel. Sources indicate that sodium perchlorate can produce 960 tons of ammonium perchlorate, which constitutes about 70% of solid ...

Iranian cargo ships allegedly carrying chemicals to make missile propellent are setting sail from China to deliver the shipment to Tehran's army.

Breathing New Air Chinese astronauts claim to have created rocket fuel on board the country's Tiangong space station using a ...

The trials verify that the fuel can survive the harsh environment of a nuclear rocket reactor. Up until now, the main way of propelling spacecraft has been through chemical rockets. To be fair ...

On this date in 1986, the space shuttle Challenger exploded seconds after liftoff, destroying the orbiter and killing her ...