Cryogenic ENgine

World's First Cryogenic Engine

Its been hard time for the space agencies to do space missions with Ordinary Jet propulsion engines,to go ahead one step further they (Russian) developed CRYOGENIC ENGINES and completed in 2006,
In their research they found,

* It uses liquefied natural gas (LNG) as fuel
*emits ten times less harmful gases than ordinary engines
*also economical owing to the use of LNG.

Hence because of its lot of useful features many space agencies nowadays use Cryogenic Engines for their rocket launchers to carry their payloads,in mostly used in  GSLV rockets..