How is a Spacecraft Launched?
A spacecraft is thrust into space by huge,
powerful rockets.
To escape from the Earth, the rocket must travel at a speed of 1 1 km/sec.
A single craft cannot carry enough fuel to
reach this
speed, hence a three stage rocket is used. As one stage runs out of fuel, it falls away
and the next stage fires. When all the three stages have gone, the space craft speeds
through space on its own. The Indian satellite Rohini used a four stage rocket while launching
in 1980.
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