23 May (Afghanistan ) within release 3rd UN World Meteorological Day, Mar. 23 goes into circulation Stamp Rockets in space face value 4 Afghan pul
Stamp Rockets in space in catalogues | |
---|---|
Michel: | Mi:AF 767A |
Stamp is horizontal format.
Also in the issue 3rd UN World Meteorological Day, Mar. 23:
Stamp Rockets in space it reflects the thematic directions:
A rocket (from Italian: rocchetto, lit. 'bobbin/spool') is a vehicle that uses jet propulsion to accelerate without using any surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely from propellant carried within the vehicle; therefore a rocket can fly in the vacuum of space. Rockets work more efficiently in a vacuum and incur a loss of thrust due to the opposing pressure of the atmosphere.