Astrophysics (Index)About

Deep Space 1

(1998-2001 mission to fly by asteroid)

Deep Space 1 (DS1) was a NASA spacecraft which was launched in 1998, flew by asteroid 9969 Braille in 1999 and comet 19P/Borrelly in 2001, after which it was deactivated. The original intent was the flybys as well as testing new instrument and spacecraft technologies, including solar electric propulsion (an ion engine). Spacecraft problems affected the ultimate choice of targets. The first flyby was not completely successful, having been designed to pass closer and acquire better images, and the second flyby was originally intended to be a different comet. Instruments:

Further reading:

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ion engine