There was a problem though; solid rocket motors are far too common to be interesting, and even hybrid rocket engines are becoming passé. We’ve never seen a liquid-fuel rocket build before ...

National Air and Space Museum Rocket, Liquid Fuel, R.H. Goddard 1935, A-Series National Air and Space Museum Nozzle, Rocket , Solid Fuel, 12AS-1000D-5, JATO (Jet-Assisted-Take-Off) Unit National Air ...

Liquid propellants provide greater propulsive thrust and power but require more complex technology and extra weight. Solid fuel is dense and burns quite quickly, generating thrust over a short time.

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

In a solid like this brick, the particles are regularly arranged touching their neighbours and move only by vibrating. This explains why solids have a fixed shape. In a liquid like water ...