An artist's conception of Deep Space 1
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Image courtesy of NASA
NASA Tests New Technologies with Deep Space 1
News story originally written on October 25, 1998
NASA just launched a spacecraft called Deep Space 1. It is going to test
some new equipment. During the tests, it will fly to a nearby
asteroid and take pictures of
it.
Deep Space 1 has a new kind of engine. It uses xenon gas. (Xenon is like
neon or helium, only heavier.) The engine doesn't produce very much
thrust. The force is less the the weight of a piece of paper! But it
will add up since there isn't any air in space to slow the spacecraft
down. The new engine uses ten times less fuel than a
normal rocket engine.
The spacecraft also has a new navigation system. Older spacecraft had to
rely on people at NASA to tell them where they were. Deep Space 1 can
keep track of where it it by itself so it only needs to contact NASA if
there's a problem. It will also decide how close to fly to the asteroid.
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